<p><strong>🎤Dr. Leigh Terry (University of Alabama)</strong></p><p><strong>In this episode of Concentrating on Chromatography, we sit down with Dr. Leigh Terry from the University of Alabama to explore one of the biggest challenges in environmental analysis today: understanding—and accurately measuring—PFAS in water systems.</strong></p><p>While most regulatory methods focus on a small number of compounds like PFOA and PFOS, there may be thousands of PFAS compounds in the environment—and much of that burden goes undetected.</p><h4><strong>In this episode, we cover:</strong></h4><ul><li>Why PFAS are called “forever chemicals” (and why that label is evolving)</li><li>The limitations of targeted<strong> LC-MS/MS methods</strong></li><li>What the fluorine mass balance problem reveals about PFAS destruction</li><li>How combustion ion chromatography (<strong>CIC</strong>) helps measure total organofluorine</li><li>Why “99.99% removal” doesn’t always mean what you think</li><li>Where PFAS actually end up in wastewater treatment systems</li><li>The most effective technologies for PFAS removal today</li><li>Why drinking water may only account for ~20% of total PFAS exposure</li></ul><h4><strong>Key Insight:</strong></h4><p>Even when analyzing dozens of PFAS compounds, researchers may only be capturing a small fraction of total organic fluorine—raising major questions about how we monitor and regulate these contaminants.</p><h3><strong>Video Transcription</strong></h3><p>In this episode of <i>Concentrating on Chromatography</i>, Dr. Leigh Terry discusses PFAS contamination in drinking water, the analytical challenges associated with measuring these compounds, current treatment technologies, and future directions for monitoring and regulation. The conversation highlights how analytical chemistry, environmental engineering, and public health intersect in addressing one of today's most discussed classes of emerging contaminants.</p><h4><strong>Understanding PFAS and Their Significance</strong></h4><h5><strong>The University of Alabama Water Quality Research Center</strong></h5><p>Dr. Leigh Terry is part of the University of Alabama's Center for Water Quality Research. The center operates an analytical laboratory focused on drinking water quality and the detection of contaminants at extremely low concentrations.</p><p>The laboratory specializes in:</p><ul><li>Drinking water analysis</li><li>Organic contaminants</li><li>Emerging contaminants</li><li>PFAS monitoring</li><li>Water quality research</li></ul><p>Their work supports both research initiatives and practical solutions for water utilities and environmental agencies.</p><h4><strong>Why Focus on PFAS?</strong></h4><p>Although PFAS compounds have existed since the 1940s, public awareness has increased dramatically only in recent years.</p><p>According to Dr. Terry, several factors contributed to the rapid growth of PFAS research:</p><ul><li>Increased media attention</li><li>New regulatory initiatives</li><li>Growing evidence of human exposure</li><li>Expanding research opportunities</li><li>Greater understanding of potential health risks</li></ul><p>PFAS are not new contaminants. Rather, society is only beginning to understand their prevalence in the environment and their potential impacts on human health.</p><h4><strong>The Development of Standardized PFAS Methods</strong></h4><p>One major advancement in PFAS analysis has been the development of standardized EPA methods.</p><p>These methods allow:</p><ul><li>Consistent testing procedures</li><li>Comparable results between laboratories</li><li>Regulatory monitoring</li><li>Reliable data interpretation</li></ul><p>Dr. Terry notes that many of these standardized approaches began appearing around 2018–2019, providing a common framework for analytical laboratories and researchers.</p><h4><strong>How Large Is the PFAS Universe?</strong></h4><p>Many people are familiar with PFOA and PFOS, two of the most heavily studied PFAS compounds. However, these represent only a small fraction of the broader PFAS family.</p><p>PFOA and PFOS are often referred to as:</p><ul><li>Legacy PFAS compounds</li><li>Original PFAS contaminants</li><li>Early commercial PFAS chemicals</li></ul><p>The challenge is that even minor modifications to molecular structure create entirely new PFAS compounds.</p><p>Researchers estimate:</p><ul><li>Thousands of PFAS compounds exist</li><li>Some estimates exceed 10,000 compounds</li><li>Exact numbers depend on how PFAS are defined</li></ul><p>Scientific debate continues regarding classification and definition, making precise counting difficult.</p><h4><strong>Why PFAS Are Called "Forever Chemicals"</strong></h4><p>Dr. Terry notes that the phrase "forever chemicals" has become widely used, although she suggests the terminology could benefit from rebranding.</p><p>PFAS persistence results from two key chemical properties.</p><h5><strong>1. Amphiphilic Structure</strong></h5><p>PFAS molecules contain:</p><ul><li>A water-loving (hydrophilic) head group</li><li>A water-repelling (hydrophobic) fluorinated tail</li></ul><p>This unusual combination allows PFAS to partition between:</p><ul><li>Water</li><li>Solids</li><li>Air-water interfaces</li><li>Foam</li></ul><p>Unlike many organic compounds, PFAS can interact effectively with multiple environmental phases.</p><h5><strong>2. Extremely Strong Carbon–Fluorine Bonds</strong></h5><p>The carbon–fluorine bond is among the strongest bonds in organic chemistry.</p><p>As Dr. Terry explains:</p><ul><li>Large amounts of energy are required to break these bonds</li><li>Natural degradation processes are often ineffective</li><li>Destruction can require highly aggressive treatment conditions</li></ul><p>These properties make PFAS extremely persistent in both environmental systems and biological organisms.</p><h4><strong>Toxicity, Regulations, and Environmental Behavior</strong></h4><h5><strong>Understanding PFAS Toxicity</strong></h5><p>One of the biggest challenges in PFAS regulation is the incomplete understanding of toxicity.</p><p>Dr. Terry explains that EPA regulations generally consider three factors:</p><ul><li>Presence in drinking water sources</li><li>Toxicity to humans</li><li>Availability of practical treatment options</li></ul><p>While some PFAS compounds are known to be harmful, many others remain insufficiently studied. Furthermore, PFAS often occur as mixtures rather than individual compounds.</p><p>This creates important scientific questions:</p><ul><li>What is the toxicity of individual PFAS?</li><li>What is the toxicity of PFAS mixtures?</li><li>How should cumulative exposure be evaluated?</li></ul><p>These uncertainties continue to drive active research.</p><h4><strong>What Happens to PFAS in Wastewater Treatment Plants?</strong></h4><p>PFAS do not behave like many conventional contaminants.</p><p>Rather than remaining fully dissolved in water, they often accumulate at interfaces such as:</p><ul><li>Water-solid interfaces</li><li>Water-air interfaces</li><li>Foam layers</li><li>Biological solids</li></ul><p>As a result:</p><ul><li>Some PFAS accumulate in biosolids</li><li>Some partition into foam</li><li>Some remain in treated effluent</li></ul><p>Their distribution depends on wastewater composition and treatment processes.</p><h4><strong>Regulatory Monitoring and Targeted LC-MS Analysis</strong></h4><p>Current EPA regulations focus on targeted analysis of specific PFAS compounds.</p><p>Examples include:</p><ul><li>PFOA</li><li>PFOS</li></ul><p>Drinking water regulations currently establish maximum contaminant levels (MCLs) for these compounds at extremely low concentrations.</p><p>Advantages of targeted LC-MS analysis include:</p><ul><li>Clearly defined analytes</li><li>Established regulatory limits</li><li>High analytical sensitivity</li><li>Reliable quantitation</li></ul><p>However, limitations remain:</p><ul><li>Only a small subset of PFAS is measured</li><li>Many PFAS compounds remain undetected</li><li>Total PFAS burden may be underestimated</li></ul><p>As Dr. Terry notes, targeted analysis provides only part of the overall picture.</p><h4><strong>The Fluorine Mass Balance Problem</strong></h4><p>One of the most important concepts discussed in the interview is fluorine mass balance.</p><p>When PFAS degrade, fluorinated fragments may remain in the environment.</p><p>This creates a critical question:</p><p>Are treatment technologies truly destroying PFAS, or merely transforming them into shorter-chain PFAS compounds?</p><p>To answer this, researchers perform fluorine mass balance calculations using:</p><ul><li>Targeted PFAS analysis</li><li>Fluoride measurements</li><li>Total organic fluorine measurements</li></ul><p>A successful destruction process should ultimately convert PFAS into fluoride ions rather than simply producing smaller PFAS molecules.</p><h4><strong>Advanced Analysis, Treatment Technologies, and Future Directions</strong></h4><h5><strong>Combining Targeted and Bulk Fluorine Measurements</strong></h5><p>Dr. Terry's group complements targeted LC-MS analysis with measurements of total organic fluorine.</p><p>Approaches include:</p><ul><li>Absorbable Organic Fluorine (AOF)</li><li>Extractable Organic Fluorine (EOF)</li><li>Combustion Ion Chromatography (CIC)</li></ul><p>In these methods:</p><ul><li>Organic fluorine is captured</li><li>Samples are combusted</li><li>Released fluoride is quantified</li></ul><p>This provides insight into total fluorinated content, although contributions may originate from sources beyond PFAS, including pharmaceuticals and consumer products.</p><h4><strong>Surprising Findings from Combined Analysis</strong></h4><p>One important finding from wastewater studies was that targeted PFAS measurements accounted for only a small fraction of total organic fluorine.</p><p>Dr. Terry reports that:</p><ul><li>Approximately 4% of measured AOF could be explained by targeted PFAS compounds</li><li>The majority of organic fluorine remained unidentified</li></ul><p>This suggests that environmental fluorine chemistry is considerably more complex than currently represented by routine monitoring programs.</p><h4><strong>Preventing PFAS Contamination in the Laboratory</strong></h4><p>PFAS analysis requires exceptionally strict quality control.</p><p>Dr. Terry's laboratory routinely:</p><ul><li>Tests every new batch of SPE cartridges</li><li>Tests carbon tubes before use</li><li>Uses DI water blanks</li><li>Verifies consumables labeled as PFAS-free</li><li>Collects field blanks</li><li>Monitors analytical blanks throughout workflows</li></ul><p>These practices help prevent contamination from laboratory materials and consumables, a common challenge in ultra-trace PFAS analysis.</p><h4><strong>Current PFAS Treatment Technologies</strong></h4><p>Three technologies currently dominate PFAS removal in drinking water treatment:</p><ul><li>Granular Activated Carbon (GAC)</li><li>Ion Exchange Resins</li><li>Reverse Osmosis (RO)</li></ul><p>Selection depends on:</p><ul><li>PFAS concentration</li><li>Water quality</li><li>Local operating conditions</li><li>Utility infrastructure</li></ul><p>Although many emerging technologies are being investigated, these remain the most widely implemented solutions.</p><h4><strong>Membrane Filtration and Pretreatment</strong></h4><p>Dr. Terry collaborates with colleagues studying membrane-based PFAS treatment.</p><p>Her own work focuses on pretreatment through biological filtration.</p><p>The strategy involves:</p><ul><li>Removing natural organic matter</li><li>Reducing membrane fouling</li><li>Improving membrane performance</li><li>Extending operational efficiency</li></ul><p>This integrated approach demonstrates how multiple treatment technologies can work together to improve PFAS removal.</p><h4><strong>Regional Monitoring Projects</strong></h4><p>The University of Alabama team participates in EPA-supported monitoring efforts along the Gulf Coast.</p><p>Their observations indicate:</p><ul><li>PFAS rarely occur alone</li><li>Multiple PFAS compounds frequently co-occur</li><li>Contamination often originates from identifiable point sources</li></ul><p>Examples include:</p><ul><li>Industrial facilities</li><li>Manufacturing operations</li><li>Military installations</li><li>Carpet manufacturing facilities</li></ul><p>Source identification remains a critical component of environmental monitoring programs.</p><h4><strong>Future Directions for PFAS Monitoring</strong></h4><p>Looking ahead, Dr. Terry sees several opportunities for improvement.</p><p>Desired advances include:</p><ul><li>In situ monitoring technologies</li><li>Portable detection systems</li><li>Reduced analytical complexity</li><li>Lower instrument costs</li><li>Less expensive consumables</li><li>Faster analysis workflows</li></ul><p>Current PFAS testing requires substantial expertise, specialized instrumentation, and rigorous quality control, making widespread implementation challenging.</p><h4><strong>Dr. Terry's Perspective on Long-Term Solutions</strong></h4><p>When asked what major PFAS challenge she would most like to solve, Dr. Terry offered a broader perspective.</p><p>Rather than focusing solely on remediation, she emphasized prevention.</p><p>Her view is that society should:</p><ul><li>Better evaluate chemical toxicity before commercialization</li><li>Assess risks before large-scale deployment</li><li>Reduce introduction of harmful compounds into the environment</li><li>Support utilities tasked with contaminant removal</li></ul><p>She notes that water utilities often bear the responsibility of removing contaminants they did not create, highlighting the need for broader societal and regulatory support.</p><h4><strong>Final Thoughts</strong></h4><p>Dr. Terry encourages consumers to:</p><ul><li>Learn where their drinking water originates</li><li>Read annual water quality reports</li><li>Stay informed about local water quality</li><li>Consider appropriate home filtration where needed</li></ul><p>At the same time, she emphasizes confidence in municipal water systems and the importance of continued investment in water quality research, monitoring, and treatment technologies.</p><h4><strong>Conclusion</strong></h4><p>PFAS remain one of the most complex challenges in environmental chemistry and water treatment. Through advanced analytical methods such as LC-MS/MS, combustion ion chromatography, fluorine mass balance approaches, and large-scale monitoring programs, researchers like Dr. Leigh Terry are helping improve our understanding of these persistent contaminants.</p><p>The interview highlights that solving the PFAS challenge will require a combination of better analytical tools, improved treatment technologies, stronger regulatory frameworks, and a greater emphasis on prevention before contaminants enter the environment.</p><blockquote><p><strong>This text has been automatically transcribed from a video presentation using AI technology. It may contain inaccuracies and is not guaranteed to be 100% correct.</strong></p></blockquote><blockquote><h4><strong>Concentrating on Chromatography Podcast</strong></h4><p>Dive into the frontiers of chromatography, mass spectrometry, and sample preparation with host David Oliva. Each episode features candid conversations with leading researchers, industry innovators, and passionate scientists who are shaping the future of analytical chemistry. From decoding PFAS detection challenges to exploring the latest in AI-assisted liquid chromatography, this show uncovers practical workflows, sustainability breakthroughs, and the real-world impact of separation science. Whether you’re a chromatographer, lab professional, or researcher you'll discover inspiring content!</p><p>You can find <strong>Concentrating on Chromatography Podcast </strong>in podcast apps:</p><ul><li><a target="_blank" rel="noopener noreferrer" href="https://open.spotify.com/show/1wZg67rCjoGju4yhqxI3tL"><strong>Spotify</strong></a></li><li><a target="_blank" rel="noopener noreferrer" href="https://podcasts.apple.com/tz/podcast/concentrating-on-chromatography/id1788429185"><strong>Apple podcast</strong></a></li><li><a target="_blank" rel="noopener noreferrer" href="https://podscan.fm/podcasts/concentrating-on-chromatography"><strong>podscan</strong></a></li></ul><p>and on <a target="_blank" rel="noopener noreferrer" href="https://www.youtube.com/@ChromatographyTalk/videos"><strong>YouTube channel</strong></a></p></blockquote>

PFAS in Water: Why We’re Missing 96% of the Problem

<p><strong>This study evaluates an immobilized enzyme reactor (IMER) containing peptide N-glycosidase from </strong><i><strong>Rudaea cellulosilytica</strong></i><strong> (PNGase Rc) for rapid online deglycosylation of intact glycoproteins. Human glycoproteins and therapeutic antibodies were used as model substrates to assess reactor performance.</strong></p><p>The PNGase Rc IMER efficiently removed complex sialylated and core-fucosylated glycans, simplifying protein characterization and glycosylation-site analysis. The approach offers a fast and effective solution for bioanalytical workflows, biopharmaceutical quality control, and stability testing of therapeutic proteins.</p><blockquote><h4><strong>The original article</strong></h4><h4><a target="_blank" rel="noopener noreferrer" href="https://pubs.acs.org/doi/10.1021/acsomega.6c00577"><strong>Online Deglycosylation of Monomeric Intact Proteins Using the PNGase Rc Immobilized-Enzyme Reactor</strong></a></h4><p>Katarína Molnárová, Petr Novák, Jana Nováková, and Petr Pompach*</p><p>ACS Omega 2026, 11, 17, 25724–25729</p><p><a target="_blank" rel="noopener noreferrer" href="https://doi.org/10.1021/acsomega.6c00577">https://doi.org/10.1021/acsomega.6c00577</a></p><h6>licensed under <a target="_blank" rel="noopener noreferrer" href="https://creativecommons.org/licenses/by/4.0/"><strong>CC-BY 4.0</strong></a></h6></blockquote><p><strong>Selected sections from the article follow. Formats and hyperlinks were adapted from the original.</strong></p><div><p>Protein glycosylation, in which monosaccharide units are attached to a protein backbone through enzymatic pathways, is involved in many important biochemical processes and is considered one of the most important post-translational modifications. <a href="javascript:void(0);">(1)</a> It affects not only the stability and secretion of proteins, cell–cell interactions, and receptor–ligand recognition mechanisms but also the biological activity, plasma half-life, immunogenicity, pharmacodynamics, and pharmacokinetics of biotherapeutics. <a href="javascript:void(0);">(2−5)</a> Therapeutical monoclonal antibodies (mAbs) are among the best known pharmaceuticals that are based on glycoproteins. <a href="javascript:void(0);">(6)</a> Over 90% of the mAbs are derived from immunoglobulin G (IgG), in which <i>N</i>-glycosylation occurs at Asn297 of the Fc region and is responsible for modulating immune responses and interactions with other proteins. <a href="javascript:void(0);">(7,8)</a> In cancer treatment, mAbs are used to increase the response of the immune system against the tumor cell, thus inhibiting the cancerous cell growth and helping with the destruction and elimination. <a href="javascript:void(0);">(9)</a> Among the most commonly used mAbs are trastuzumab, bevacizumab, cetuximab, or margetuximab, which are used as an additional treatment for breast, colorectal, prostate, or lung cancer. <a href="javascript:void(0);">(10)</a></p><p>Mass spectrometry (MS)-based methods have become a method of choice in the analysis of mAbs that can provide information on sequence, post-translational modifications, and glycosylation profiles. <a href="javascript:void(0);">(11)</a> The enzymatic removal of the attached glycans from the protein backbone can reduce the complexity of the MS analysis, which can lead to a better understanding of the protein structure and modifications. In glycoproteomics, peptide-<i>N</i>-glycosidase F (PNGase F) is most used for glycan removal. It cleaves the linkage between the Asn residue and the <i>N</i>-acetylglucosamine (GlcNAc). <a href="javascript:void(0);">(12)</a> Jmeian et al. developed a monolithic PNGase F enzyme reactor fabricated in fused silica using a glycidyl methacrylate-<i>co</i>-ethylene dimethacrylate polymer and integrated it into an LC–MS workflow. The authors demonstrated the applicability of this system for the characterization of released neutral and acidic <i>N</i>-glycans by LC–MS analysis. <a href="javascript:void(0);">(13)</a> In another study, oriented immobilization of PNGase F onto a methacrylate-based monolithic support via glutathione-<i>S</i>-transferase–glutathione affinity coupling was employed to release <i>N</i>-glycans from denatured ribonuclease B and fetuin, as well as from native IgG. The released glycans and the corresponding deglycosylated proteins were subsequently analyzed by MALDI-MS. <a href="javascript:void(0);">(14)</a></p><p>Gramlich et al. showed the potential of PNGase Rc for <i>N</i>-glycan hydrolysis from both tryptic peptides and native glycoproteins at a low pH. The favorable properties of PNGase Rc, including activity at acidic pH and compatibility with reducing agents such as <i>tris</i>(2-carboxyethyl)phosphine hydrochloride (TCEP) and denaturants like urea, make this enzyme well suited for online intact protein deglycosylation workflows. <a href="javascript:void(0);">(15,16)</a></p><p>In this report, we demonstrate the potential of the PNGase Rc IMER for rapid online deglycosylation of reduced monomeric glycoproteins, including human haptoglobin (Hp), human transferrin, <i>anti</i>-hHD6, and the therapeutic monoclonal antibodies trastuzumab and bevacizumab. The column retained its activity over more than 150 consecutive measurements, highlighting its robustness, suitability for repeated use in bioanalytical workflows, and applicability to pharmaceutical research and development.</p><h4><strong>Experimental Section</strong></h4><h5><strong>Instrumentation and Experimental Conditions</strong></h5><p>Automated sample handling and online deglycosylation were carried out using the HDX workstation (AffiPro, Czech Republic). The scheme of the system is shown on <a target="_blank" rel="noopener noreferrer" href="https://pubs.acs.org/doi/10.1021/acsomega.6c00577#fig1">Figure 1</a>. Samples of 50 mM ammonium bicarbonate buffer (pH 8.2) and 40 mM TCEP were placed in a sample tray at 4 °C. Ten microliters of the protein sample at a concentration of 0.03 mg/mL (0.3 μg per injection) were added to 40 μL of 50 mM ammonium bicarbonate and then transferred to 50 μL of 40 mM TCEP, pH 2.3. The disulfide bond reduction was carried at 40 °C for 5 min. The automated sample handling system injected 100 μL of the reaction mixture into the sample loop and switched the injection valve. Online deglycosylation was performed at room temperature using a PNGase Rc IMER (2.1 × 20 mm, AffiPro, Czech Republic) at a flow rate of 50 μL/min, followed by protein desalting on an OPTI-TRAP (0.5 × 2 mm) trap column (Optimize Technologies Inc., Oregon City, Oregon, USA) heated to 55 °C for 10 min with 0.2% formic acid delivered by an <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library?mainauthorItems=10&amp;search=1260+Infinity+III+isocratic+pump"><strong>Agilent 1260 Infinity III isocratic pump</strong></a><strong> </strong>(Agilent Technologies, Santa Clara, California, USA). By switching the trap valve, the protein was eluted by an acetonitrile gradient [(min)/% B] 0/10-9/10-16/70-16.5/90-17/90-18/10-23/10] delivered by the <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library?mainauthorItems=10&amp;search=1290+Infinity+II+LC"><strong>Agilent 1290 Infinity II HPLC</strong></a> system (Agilent Technologies, Santa Clara, California, USA) at a flow rate of 20 μL/min. The mobile phase A consisted of 5% acetonitrile with 1% propan-2-ol and 0.1% formic acid, and the mobile phase B consisted of 95% acetonitrile with 1% propan-2-ol and 0.1% formic acid. The <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library?mainauthorItems=8&amp;search=maXis+Q-TOF"><strong>maXis Q-TOF mass spectrometer</strong></a> (Bruker Daltonics, Bremen, Germany) was operated in the survey MS mode in a mass range of <i>m</i>/z 50–3000. The acquired data were analyzed and processed by <strong>DataAnalysis 4.4</strong> (Bruker Daltonics) and deconvoluted by UniDec <a href="javascript:void(0);">(17)</a> with the following parameters: data processing range, <i>m</i>/z 500–3000; charge range, 1–80; allowed mass range, 1,000–80,000; sampling rate, 10 Da; peak detection range, 500 Da; and peak detection threshold, 0.1.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/ACS_Omega_2026_11_17_25724_25729_Figure_1_Schematic_of_the_automated_sample_handling_system_for_online_protein_deglycosylation_and_desalting_d4ee48b627.jpg" alt="ACS Omega 2026, 11, 17, 25724–25729: Figure 1. Schematic of the automated sample handling system for online protein deglycosylation and desalting. Protein samples, along with 50 mM ammonium bicarbonate and 40 mM TCEP stock solutions were placed in a sample tray chilled to 4 °C, while a second tray heated to 40 °C was used for disulfide bond reduction with TCEP buffer." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_ACS_Omega_2026_11_17_25724_25729_Figure_1_Schematic_of_the_automated_sample_handling_system_for_online_protein_deglycosylation_and_desalting_d4ee48b627.jpg 245w," sizes="100vw" width="1287" height="386"></p><h4><strong>Results and Discussion</strong></h4><p>The performance of the PNGase Rc IMER for the removal of complex <i>N</i>-glycans from intact proteins was tested using heavily glycosylated human Hp with four glycosylation sites (Asn184, Asn207, Asn211, and Asn241) <a href="javascript:void(0);">(18)</a> located at the β-chain and occupied by complex <i>N</i>-glycans terminated with sialic acid. Haptoglobin phenotype 2-1, used in this study, forms multimers consisting of β-chain and disulfide linked α1 and α2 chains. <a href="javascript:void(0);">(19)</a> The detection of glycosylated Hp β-chain requires reduction of the disulfide bonds by incubating the protein with a reducing reagent. TCEP is a common reducing reagent used for fast reduction of disulfide bonds at various pH levels. Forty degrees Celsius, the maximum temperature of the PAL tray, and 5 min of incubation were sufficient for complete reduction of Hp disulfide bonds. Individual signals corresponding to the glycosylated β-chain were observed in the <i>m</i>/<i>z</i> range of 35,800–37,400 (<a target="_blank" rel="noopener noreferrer" href="https://pubs.acs.org/doi/10.1021/acsomega.6c00577#fig2">Figure 2</a>a). The limited resolution of the mass spectrometer did not allow assigning the different glycoforms of the haptoglobin β-chain, which is occupied by biantennary, triantennary, or tetraantennary glycans with various amounts of sialic acid and fucose. <a href="javascript:void(0);">(20,21)</a> The nonglycosylated α1 and α2 chains were observed at <i>m</i>/<i>z</i> 9190 and 15,940. When the PNGase Rc IMER was integrated into the flow system, a signal at <i>m</i>/<i>z</i> 27,270 was detected, demonstrating complete deglycosylation of the haptoglobin β-chain (<a target="_blank" rel="noopener noreferrer" href="https://pubs.acs.org/doi/10.1021/acsomega.6c00577#fig2">Figure 2</a>b).</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/ACS_Omega_2026_11_17_25724_25729_Figure_2_A_Mass_spectrum_of_human_Hp_without_the_PN_Gase_Rc_IMER_implemented_in_the_system_0ecca84ed4.jpg" alt="ACS Omega 2026, 11, 17, 25724–25729: Figure 2. (A) Mass spectrum of human Hp without the PNGase Rc IMER implemented in the system. The base peak signals of the spectrum correspond to both α1 and α2 chains. The signal of the β chain is spread across its different glycoforms. (B) Mass spectrum of human Hp with the PNGase Rc IMER implemented in the system. The signal of the deglycosylated β chain is higher compared to its glycosylated form and observed only at m/z 27,270. This indicates complete removal of glycans from the Hp β chain." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_ACS_Omega_2026_11_17_25724_25729_Figure_2_A_Mass_spectrum_of_human_Hp_without_the_PN_Gase_Rc_IMER_implemented_in_the_system_0ecca84ed4.jpg 245w," sizes="100vw" width="2015" height="913"></p><p>In a previous study by Krenkova et al., the PNGase F IMER was used for deglycosylation of IgG, RNase B, and bovine fetuin with follow-up mass spectrometry detection of both released glycans and intact proteins using MALDI-TOF MS. <a href="javascript:void(0);">(14)</a> The authors demonstrated an effective method for rapid protein deglycosylation, which, however, requires additional sample handling prior to mass spectrometry measurement. The other study by Jmeian et al., which focused on released <i>N</i>-glycans, implemented a PNGase F IMER with online LC–MS detection. <a href="javascript:void(0);">(13)</a> The authors show the effectiveness of the method by identifying many different glycans released from a single protein or from a complex plasma mixture. Our approach is not directly intended for released <i>N</i>-glycan analysis; instead, it demonstrates the ability to measure intact proteins after rapid online deglycosylation using PNGase Rc at low pH. Samples prepared immediately prior to mass spectrometry analysis using the automated sample-handling platform can reduce variability associated with autosampler residence time, as some proteins may undergo degradation or precipitation during storage in the autosampler.</p><p>Although all glycoproteins in this study were effectively deglycosylated, the method’s efficiency depends on the characteristics of the individual glycoprotein. Therefore, optimizing method parameters─including the isocratic flow rate, glycoprotein incubation time with TCEP, and/or the addition of denaturing reagent─may improve the overall efficiency of the deglycosylation process.</p><p>The PNGase Rc IMER stability over a series of injections was tested by using the trastuzumab antibody. The measurements were carried out with the enzyme column kept at the laboratory temperature. As shown in <a target="_blank" rel="noopener noreferrer" href="https://pubs.acs.org/doi/10.1021/acsomega.6c00577#fig5">Figure 5</a>, the results indicate that the column performance remained stable over the course of the 150 measurements, and no glycosylated form of the trastuzumab antibody heavy chain was detected. The activity of PNGase Rc in the presence of 5% acetonitrile and 5% propan-2-ol was evaluated using a bottom-up approach with human 2–1 haptoglobin, which was online-digested by a coimmobilized nepenthesin-2/pepsin IMER. In the absence of an organic solvent, the peptide IEKVVLHPNYSQVD remained fully deglycosylated throughout 30 injections. In contrast, in the presence of organic solvent, a marked loss of enzymatic activity was observed after only a few injections (<a target="_blank" rel="noopener noreferrer" href="https://pubs.acs.org/doi/suppl/10.1021/acsomega.6c00577/suppl_file/ao6c00577_si_001.pdf">Figure 2</a>).</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/ACS_Omega_2026_11_17_25724_25729_Figure_5_Monitoring_the_stability_and_performance_of_PN_Gase_Rc_IMER_4a9b5a9c53.jpg" alt="ACS Omega 2026, 11, 17, 25724–25729: Figure 5. Monitoring the stability and performance of PNGase Rc IMER. Trastuzumab heavy chain was completely deglycosylated after 150 injections." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_ACS_Omega_2026_11_17_25724_25729_Figure_5_Monitoring_the_stability_and_performance_of_PN_Gase_Rc_IMER_4a9b5a9c53.jpg 170w," sizes="100vw" width="996" height="918"></p><h4><strong>Conclusions</strong></h4><p>Here, we demonstrate the potential of the PNGase Rc IMER for the online removal of <i>N</i>-glycans from intact monomeric glycoproteins reduced with TCEP. The column showed high sensitivity toward Hp, which has multiple glycosylation sites with various glycan structures, confirming its suitability for the profiling of complex glycoproteins. Bevacizumab and trastuzumab exhibited similar glycosylation profiles, with core-fucosylated biantennary glycans being the most abundant. Online deglycosylation with the PNGase Rc column resulted in a complete removal of the glycans from the heavy chains of both antibodies, proving that the column can be used for the rapid online deglycosylation of intact therapeutic mAbs. Moreover, the column remained stable over 150 measurements without any loss of activity, even when it was maintained at laboratory temperature. The significantly reduced reaction time, together with full automation and the absence of manual handling steps, substantially improves analytical throughput compared to conventional off-line deglycosylation workflows. These findings highlight the potential of the PNGase Rc IMER in the development of glycoprotein-based biopharmaceuticals, where detailed structural characterization of the protein part is critical for quality control, monitoring batch-to-batch variability, and stability testing.</p></div>

Online Deglycosylation of Monomeric Intact Proteins Using the PNGase Rc Immobilized-Enzyme Reactor

<p><strong>In the week of June 29, the following webinars await you in the field of liquid phase and especially HPLC and LC/MS.</strong></p><blockquote><h4><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinars"><strong>👉 DETAILS AND REGISTRATION IN THE WEBINARS SECTION</strong></a></h4><p><strong>👉 Search and filter in the largest global database</strong> with over <strong>5 500 GC, LC, MS and spectroscopy webinars</strong>.</p></blockquote><h5><strong>1. Thermo Fisher Scientific: Insights from an IC specialist: To be suppressed or not suppressed?</strong></h5><ul><li>Tu, 30.6.2026 09:00 CEST</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinar/6310">Registration</a></li></ul><p>Join Thermo Fisher’s Ask the Experts session to learn how suppressor technology impacts ion chromatography performance, sensitivity, reliability, maintenance, and troubleshooting.</p><h5><strong>2. SCIEX: Advancing Proteomics with ZenoTOF: From Single-Cell Analysis to Plasma Biomarker Discovery</strong></h5><ul><li>Tu, 30.6.2026 11:30 CEST</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinar/6311">Registration</a></li></ul><p>Discover how ZenoTOF high-resolution mass spectrometry is accelerating single-cell proteomics and plasma biomarker discovery through enhanced sensitivity, throughput, and automation.</p><h5><strong>3. Agilent Technologies: Measuring Diverse Samples with UV/VIS Spectrometers and Integrating Spheres</strong></h5><ul><li>Tu, 30.6.2026 20:30 CEST</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinar/6052">Registration</a></li></ul><p>This webinar will discuss diffuse transmission and reflection UV/VIS measurements, including how to perform measurements with Agilent’s Cary 60 UV/VIS Spectrometer.</p><h5><strong>4. Waters Corporation: Informatics series #33 Tips, Tricks and Best Practices</strong></h5><ul><li>Th, 2.7.2026 11:00 CEST</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinar/6315">Registration</a></li></ul><p>This interactive session revisits essential features, shortcuts, and practical techniques in Empower software that can streamline everyday laboratory work and reduce unnecessary effort.</p><h5><strong>5. Waters Corporation: Unlocking Therapeutic Peptide Characterisation (GLP-1RAs) with Cyclic IMS</strong></h5><ul><li>Th, 2.7.2026 15:00 CEST</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinar/6313">Registration</a></li></ul><p>Discover how cyclic ion mobility spectrometry (cyclic IMS) improves characterization of GLP-1 analogues and therapeutic peptides, supporting development, quality control, and regulatory submissions.</p><h5><strong>6. Agilent Technologies: Spectral Flow Cytometry Masterclass - Session 1</strong></h5><ul><li>Fr, 3.7.2026 07:00 CEST</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinar/6316">Registration</a></li></ul><p>Learn how full-spectrum flow cytometry enables high-dimensional cell analysis. Explore spectral flow technology, experimental design, and applications in immunology, oncology, and vaccine research.</p>

Webinars LabRulezLCMS Week 27/2026

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<div><h4><strong>Navigating Challenges and Opportunities for Environmental Testing Labs Under the Revised EU Water Framework Directive</strong></h4><p><strong>The European Commission’s proposed updates to the Water Framework, Groundwater, and Environmental Quality Standards Directives are bringing new responsibilities and opportunities for environmental testing labs. With expanded pollutant lists - including PFAS, pharmaceuticals, and pesticide metabolites - and stricter monitoring and reporting requirements, the landscape of water analysis is rapidly evolving.</strong></p><p>Join the 4th Waters Environmental Webinar Series to explore how your lab can navigate these challenges and turn regulatory change into opportunity.</p><p>Register for free and partner with us to shape the future of European water quality.</p><h5><strong>Why Attend</strong></h5><p>Stay ahead of new EU regulatory demands with insights from leading experts. Gain practical guidance, share experiences with peers, and prepare your lab for the next generation of water quality standards.</p><h5><strong>Highlights</strong></h5><ul><li>New pollutant categories and analytical challenges</li><li>Updates to monitoring protocols and reporting</li><li>Innovative methods to meet revised Environmental Quality Standards</li><li>Strategic guidance for compliance and adaptation</li></ul><p><strong>Lead the change in water analysis—stay ahead, stay compliant, and make a real impact.</strong></p><h4><strong>EPISODE 6: Blue Thursdays 2026 – The Best Of</strong></h4><p>In this final session, we’ll look back at the most important things we’ve learned throughout the Blue Thursday series. We’ll explore the big trends we’re seeing, the smart tools scientists use to study the environment, and what exciting developments will be coming next.</p><blockquote><p><strong>Speaker:</strong> Claudia Rathmann (Principal F&amp;E Market Development Manager, Waters Corporation)</p><p>Experienced and passionate analytical science professional with over 20 years of technical and strategic expertise in food and environmental applications. Currently serving as Principal Market Development Manager at Waters Corporation, Claudia specializes in connecting customers with product management to deliver innovative solutions for complex analytical challenges. With a strong scientific foundation and a proven track record in both technical and marketing roles, Claudia bridges the gap between customer needs and product innovation across the EMEA region.</p><p><strong>Speaker: </strong>Janitha De-Alwis (JD) (Principal F&amp;E Market Development Manager, Waters Corporation)</p><p>Janitha De-Alwis (known as JD) is an applications chemist in the European demo lab, based in Wilmslow, UK. His main role focuses on application development work for the food and environmental sector. JD takes great pride in speaking to, and advising, many food and environmental customers. His position requires him to be reactive and proactive to the changes in the food industry, such as changing regulations, topical issues and food safety risks.</p></blockquote></div>

Blue Thursdays 2026 – The Best Of

In this final session, we’ll look back at the most important things we’ve learned throughout the Blue Thursday series.

<p><strong>PFAS &amp; Our Planet is a webinar series on PFAS testing in environmental samples, food and food contact materials, textiles and other materials. Alongside the laboratory and regulatory lens, the series addresses the broader planetary impact of PFAS, including their persistence and movement through water, soil, air, food systems, and materials. It brings together what laboratories and industry need to understand now: where PFAS rules are heading, which sample types are under increasing focus, what needs to be measured, and how those needs translate into method selection, workflow setup, and result reporting.</strong></p><h4><strong>Webinar Series Details</strong></h4><ul><li>One registration to attend the full three-part series</li><li>Questions for experts in advance and/or live Q&amp;A</li><li>Access to recorded sessions provided</li></ul><h4><strong>Who Should Attend:</strong>&nbsp;</h4><p>Environmental and water testing laboratories, food testing laboratories, food contact material and packaging laboratories, textile and materials testing laboratories, contract testing laboratories, public sector and regulatory laboratories, manufacturers of food, packaging, textiles, and consumer goods, quality, product safety, regulatory affairs, and sustainability functions, and research laboratories working on PFAS analysis.</p><h4><strong>Recommended for:&nbsp;</strong></h4><p>Analytical chemists, laboratory managers, QA/QC managers, regulatory affairs managers, food safety and product safety managers, environmental scientists, packaging and food contact materials specialists, textile and materials testing leads, sustainability and product stewardship managers, validation and method development scientists, and technical leaders in contract, public sector, and research laboratories.</p><h4><strong>Regulatory context covered:&nbsp;</strong></h4><p>EU and U.S. PFAS developments, food contact and packaging measures, environmental monitoring frameworks, OEKO-TEX requirements for textiles and materials, Singapore’s food and water surveillance activity, India’s draft PFAS-related packaging amendment, and emerging movement in parts of Southeast Asia like Thailand, Malaysia, Vietnam, Indonesia, Bangladesh and Philippines.</p><h3><strong>Textiles and Materials</strong></h3><p><strong>Textiles and treated materials are facing stronger PFAS scrutiny as product restrictions widen and supply chains are asked to verify material content more clearly. This session will cover the main external reference points shaping that shift, including the EU REACH PFAS restriction process and OEKO-TEX requirements, which have become highly relevant for textile and material suppliers serving global brands.</strong></p><p>It will then step into the laboratory workflow for textiles and related materials, covering extraction and cleanup, targeted LC/MS/MS for non-volatile PFAS, selected GC/MS/MS approaches for volatile PFAS where relevant, contamination control, and reporting formats suited to product verification. Regional context will be framed around export-market pull, buyer specifications, and certification-driven testing, which are often the main drivers for suppliers in South and Southeast Asia.</p><blockquote><p><strong>Presenter: </strong>David Saladin (Ecology Lab Team Leader, TESTEX AG, Swiss Textile Testing Institute)</p><p><strong>Presenter:&nbsp;</strong>Aimei Zou, Ph.D. (Application Scientist, Agilent Technologies, Singapore)</p></blockquote>

Agilent Technologies: PFAS & Our Planet: Textiles and Materials

PFAS & Our Planet: Textiles and Materials

PFAS in textiles webinar: regulations, LC-MS/MS and GC-MS/MS workflows, contamination control, and compliance for global supply chains.

<p><strong>In the race to launch GLP‑1 generics and novel agonists, complex impurity analyses directly impact your speed to market. Conventional columns often obscure peaks of critical impurities, leading to costly rework and increased regulatory scrutiny.</strong></p><p>Join us and learn about new analytical tools designed to streamline your process and deliver reproducible, high-resolution separations of GLP‑1 receptor agonists (GLP-1 RAs) and insulin-related impurities without relying on suppressive mobile‑phase additives.</p><p>Learn how improved resolution can accelerate method development, increase confidence in your results, and support faster time to market for your GLP-1 RA and insulin products.</p><h4><strong>In this webinar you will learn:</strong></h4><ul><li>How to gain greater resolution for your GLP-1 RA and insulin impurity analysis separations</li><li>How to achieve up to 3x faster separations</li><li>How to identify subtle impurities, such as single amino-acid substitutions and deamidation, beyond the detection limits of conventional reversed-phase technologies</li></ul><h4><strong>Who should attend</strong></h4><p><strong>This webinar is designed for you if you work in:</strong></p><ul><li>Analytical development</li><li>Process development</li><li>R&amp;D</li><li>CXOs dealing with GLP-1 RAs or insulin</li></ul><blockquote><p><strong>Presenter: </strong>Michael Zagieboylo (Principal Product Manager, Waters Corporation)</p><p>Michael Zagieboylo is a Principal Product Manager at Waters Corporation whose responsibilities involve assisting in the development and commercialization of innovative reagents and chromatography-based technologies for the separation, purification, and characterization of biological molecules, focusing on peptide and protein separations.</p></blockquote><blockquote><p><strong>Presenter: </strong>Steve Shiner (Senior Manager, R&amp;D for Biopharma Solutions, Waters Corporation)</p></blockquote>

Clear the Noise: Improving Resolution of GLP-1 Receptor Agonist and Insulin Impurities

Resolve GLP-1 receptor agonist and insulin impurities faster. Discover analytical tools for high-resolution separation of deamidation and amino-acid changes.

Improving Resolution of GLP-1 and Insulin Impurities

<div><div container-id="cq-colctrl-lt0" comp-id="A1"><div><p><strong>GLP-1 receptor agonists are among the most impactful peptide therapeutics, but their structural complexity presents significant analytical challenges. From sequence modifications to lipidation and manufacturing variability, achieving confident characterization requires advanced approaches.</strong></p><p>Join us to learn how a streamlined LC-MS workflow can simplify GLP-1 analysis. This session will highlight integrated strategies combining UHPLC separation, high-resolution mass spectrometry, and automated data analysis to support robust characterization and impurity monitoring of peptides such as semaglutide and tirzepatide.</p><h5><strong>What You Will Learn</strong></h5><ul><li>How to optimize LC-MS workflows for comprehensive GLP-1 peptide characterization</li><li>Practical strategies for improving separation of closely related peptide species</li><li>Approaches to enhance sequence coverage using advanced fragmentation techniques</li><li>Methods for confident impurity profiling and structural heterogeneity assessment</li></ul><p>Secure your spot today and gain practical insights to simplify complex GLP-1 analysis.</p><blockquote><p><strong>Presenter: </strong>Dr. Sara Carillo (Bioanalytical Research Lead, NIBRT)</p><p>Dr. Carillo specializes in structural characterization of complex biomolecules using mass spectrometry and NMR. At NIBRT, she develops advanced analytical strategies to better understand biomanufacturing processes and the structural complexity of biopharmaceuticals.</p></blockquote><blockquote><p><strong>Presenter: </strong>Dr. Kai Sheffler (Senior Manager, Product Manager for BioPharma Workflows, Thermo Fisher Scientific)</p><p>Dr. Scheffler is a biochemist specializing in LC-MS technologies for biopharmaceutical analysis. His expertise includes peptide mapping, intact mass analysis, and impurity profiling using HRAM MS. He focuses on developing LC-MS solutions for comprehensive characterization and quality assessment of biopharmaceuticals.</p></blockquote><blockquote><p><strong>Moderator:</strong> Dr. Kelly Broster (Sr Manager, Market Development &amp;&nbsp;Collaborations, Pharma Biopharma, Thermo Fisher Scientific)</p></blockquote></div></div></div>

Thermo Fisher Scientific: Simplifying Complexity in GLP-1 Receptor Agonist Analysis: From Structural Characterization to Impurity Monitoring

Simplifying Complexity in GLP-1 Receptor Agonist Analysis: From Structural Characterization to Impurity Monitoring

Optimize LC-MS workflows for GLP-1 analysis. Master impurity profiling, peptide separation, and structural characterization of semaglutide and tirzepatide

Simplifying GLP-1 Agonist Analysis & Impurity MS

<h4><strong>One webinar, two viewing options</strong></h4><p><strong>We know you're busy, select a viewing session that works best for you.</strong></p><h5><br><strong>Viewing Options</strong></h5><p><strong>Session 1</strong></p><ul><li>Tuesday, June 23, 2026</li><li>Los Angeles: 10:00 AM PT | New York: 1:00 PM EST</li><li>Mexico City: 12:00 PM CDT</li></ul><p><strong>Session 2</strong></p><ul><li>Wednesday, June 24, 2026</li><li>London: 9:00 AM BST | Berlin: 10:00 AM CEST&nbsp;</li><li>Mumbai: 1:30 PM IST</li></ul><p>Supported Liquid Extraction (SLE) for the cleanup of biological matrices has several advantages over Solid Phase Extraction (SPE). SLE requires fewer steps and less method development compared to SPE. For most samples that can be processed by liquid-liquid extraction, SLE can usually be used to provide cleaner and faster solvent partitioning. Historically, to get the cleanest SLE extracts, halogenated solvents like dichloromethane were used for elution of target analytes from the sorbent. A supported liquid extraction (SLE) approach that produced clean extracts with high recoveries and low matrix interferences using ethyl acetate, a more sustainable organic solvent, will be presented. Results for steroids, methylmalonic acid (MMA), and underivatized estrogens in human serum, in addition to optimized LC-MS/MS conditions and LC column considerations, are also discussed.</p><h4><strong>Key Learning Points</strong></h4><ul><li>Discover how SLE provides clean extracts for LC-MS/MS quantitation at low concentrations.</li><li>Describe conditions for the extraction and analysis of MMA from human serum.</li><li>Define method parameters for low-level quantitation of estrogens without derivatization.</li></ul><h4><strong>Who Should Attend</strong></h4><ul><li>All clinical, CROs, and forensic/toxicology analysts using LC/MS-MS.</li></ul><blockquote><p><strong>Presenter: </strong>Stephanie J Marin (Sr. Global Market Development Manager - Applied Markets, Phenomenex)</p><p>Stephanie J. Marin is the Clinical and Forensics Global Market Development Manager at Phenomenex. She received her Ph.D. in chemistry from Arizona State University and has expertise in sample preparation, liquid chromatography, and mass spectrometry. She has over 10 years of experience developing and validating clinical methods from her tenure at the ARUP Institute for Clinical and Experimental Pathology. Dr Marin has worked in marketing, product development, and applications development, in addition to customer-facing roles in customer and technical support, service, and customer education and training. She has also held positions at Hamilton Company, Selerity Technologies, and Biotage, and in analytical services for specialty chemicals and polymers at Rohm and Haas (now Dow). She was also a supervisor at an EPA-certified laboratory. She is the author of over 30 peer-reviewed publications, book chapters, and over 100 abstracts presented at national and international meetings.&nbsp;</p></blockquote>

Phenomenex: Sustainable Strategies for High Sensitivity Analysis for Clinical Research LC-MS/MS Methods 

Sustainable Strategies for High Sensitivity Analysis for Clinical Research LC-MS/MS Methods

Advance clinical LC-MS/MS analysis. Discover sustainable Supported Liquid Extraction (SLE) methods for steroids, MMA, and underivatized estrogens in serum

Sustainable SLE and LC-MS/MS for Clinical Analysis

<h4><strong>DMPK workflows, not workarounds</strong></h4><p>Current LC-MS/MS platforms can routinely achieve sub ng/mL levels of sensitivity for large molecule bioanalysis. However, as therapeutic modalities become more effective, or as the delivery mechanism changes from IV to oral, there is an increasing demand for bioanalytical workflows that can achieve even lower levels of sensitivity.</p><p>Join us to learn how moving to microflow can allow you to improve your limits of quantification, and unlock the full potential of the complete, end-to-end bioanalytical workflow.</p><h5><strong>Topics we’ll explore</strong></h5><ul><li>Advantages of using microflow to improve sensitivity for large molecule bioanalysis</li><li>Key learnings for deploying microflow LC-MS/MS in routine bioanalytical environments</li><li>How using microflow can help reduce solvent usage, increase cost savings and reduce environmental footprint</li></ul><h5><strong>Who should attend</strong></h5><p>This webinar is designed for Research Associates, Scientists, Directors, Lab managers in pharma, biopharma, biotech and contract research organizations performing bioanalysis.</p><blockquote><p><strong>Speaker: </strong>Dr. Robert Plumb (Scientific Advisor, DMPK, Pharma Quan Program, Waters Corporation)</p><p>Dr Plumb is currently a scientific advisor in the LCMS Business Unit at Waters Corporation. &nbsp;He has several years of experience in the pharmaceutical industry beginning in 1987 at Glaxo R&amp;D DMPK Department focusing on regulatory bioanalysis and metabolite identification.</p><p>In 2001 he moved to Waters Corporation in Milford, MA, USA where he has worked in R&amp;D, pharmaceutical business development, metabolic phenotyping and discovery omics.</p><p>Research interest includes application of fast chromatography and advanced mass spectrometry in bioanalysis and omics studies. Dr Plumb has published over 150 papers on LC/MS(MS) and NMR for bioanalysis, metabolomics and metabolite identification.</p></blockquote><blockquote><p><strong>Speaker: </strong>Nikunj Tanna (Pharma Marketing Manager, Waters Corporation)</p><p>Nikunj Tanna is the Pharma Marketing Manager at Waters corporation. His role at Waters focuses on complete workflow solutions for quantitation of small and large molecules.</p><p>These end-to-end workflows include automation, novel sample preparation and chromatographic separation approaches, followed by detection using TQ platforms.</p></blockquote>

Lower the Flow to see even more

Maximize large molecule bioanalysis sensitivity. Discover how microflow LC-MS/MS enhances limits of quantification and lowers laboratory solvent costs

Lower the Flow to See More: Microflow LC-MS/MS Benefits

<p><strong>By attending this webinar you will:</strong></p><ul><li>Gain practical approaches for detecting unknown PFAS in consumer goods and environmental samples</li><li>Understand a simplified LC-MS/MS workflow for sensitive, compliant PFAS analysis in animal-derived foods</li><li>Understand PFAS contamination risks in food and evolving regulatory expectations</li><li>Explore automated and semi-automated PFAS workflows for complex food matrices.</li></ul><h5><strong>Presentation 1: Hydrolysis as a Critically Important Step in the Analysis of Fluorotelomer Alcohols in Textiles and Other Products</strong></h5><ul><li>Vladimir Nikiforov, Senior Scientist, Environmental Chemistry and Health Effects, NILU, Tromsø</li></ul><p>In this webinar, a simple hydrolysis-based approach for identifying and accounting for PFAS precursors in consumer products and environmental samples will be presented by its creator. The theory behind the method will be explained. Advantages and limitations of the recently certified EN 17681-1:2025 method will be discussed. Hydrolysis will be compared to oxidation as an alternative/complementary work-up for release of perfluoroalkyl substances.</p><p>The presentation will focus on fluorotelomer alcohol (FTOH)-based precursor compounds, including polymeric materials that may degrade into regulated or hazardous PFAS. Attendees will learn how a straightforward hydrolysis procedure can convert precursor compounds into detectable free FTOHs while preserving valuable structural information for source identification and risk assessment. Case studies from textile extracts will demonstrate how preliminary hydrolysis revealed up to 1300-fold higher levels of previously “hidden” FTOHs compared to conventional analysis alone.</p><h5><strong>Presentation 2: PFAS Analysis in Animal‑Derived Foods Using a Direct Blend &amp; Inject LC‑MS/MS Workflow</strong></h5><ul><li>Phil Taylor, Marketing Lead – Food &amp; Environmental, PerkinElmer</li></ul><p>Per‑ and polyfluoroalkyl substances (PFAS) present major analytical challenges in animal‑derived foods due to complex matrices and tightening regulations. This presentation demonstrates a direct Blend &amp; Inject LC‑MS/MS workflow for quantifying 25 PFAS compounds aligned with EPA Method 533 and EU requirements. The approach delivers ppt‑level sensitivity, excellent linearity, and robust performance without solid‑phase extraction.</p><h5><strong>Presentation 3: PFAS in Food – Addressing Contamination in the Food Supply Chain</strong></h5><ul><li>Margot Lee, Senior Scientist, Waters Corporation &nbsp;and &nbsp;MJ Madden, Technical Support Manager and Project Manager, PromoChrom Technologies</li></ul><p>PFAS contamination in food presents a growing analytical and regulatory challenge, particularly as attention expands beyond water into complex food and animal protein matrices. In this session, Waters and PromoChrom experts explore practical, mostly automated workflows designed to improve robustness, efficiency, and data quality in PFAS food testing.</p><p>The presentation will feature real-world examples of PFAS analysis in food matrices, including eggs and animal proteins, highlighting different sample preparation strategies adapted to matrix complexity and laboratory throughput needs. Attendees will gain insight into how pressurized solvent extraction, SPE cleanup, and QuEChERS-based approaches can be combined with automation to streamline workflows while maintaining sensitivity and reproducibility.</p><p>As PFAS testing in food continues to evolve, this session will also provide a forward-looking view on emerging workflow optimizations and how labs can prepare for expanding regulations and increasing analytical demands.</p><h5><strong>What you need to know:</strong></h5><ul><li><strong>Duration:</strong> Approximately 90 minutes</li></ul><blockquote><p><strong>Presenter: </strong>Vladimir Nikiforov (Senior Scientist, Environmental Chemistry and Health Effects, NILU, Tromsø)</p><p>Vladimir Nikiforov is a senior scientist at NILU, working on method development for new types of analytes, with 40+ years experience in “PFAS” chemistry. He is a synthetic organic, organofluorine and physical organic chemist by background. In addition, he has 30+ years of experience in environmental chemistry with emphasis on trace organic analytical chemistry. Key expertise and research interest are: QSAR, PFAS, NTS, SVOC, suspect screening, microplastic, synthesis of standards, method development, GC, LC, MS, NMR, fate models, transformation products, reactivity of organic molecules, transformation kinetics, persistency, UV-compounds, tire additives, air sampling, air monitoring, Arctic pollution, derivatization methods, structure elucidation, international regulation, and chemical education. Previous publications and projects can be found here.</p></blockquote><blockquote><p><strong>Presenter:&nbsp;</strong>Phil Taylor (Marketing Lead – Food &amp; Environmental, PerkinElmer)</p><p><span>Phil Taylor is a Marketing Leader for Food &amp; Environmental markets at PerkinElmer, bringing nearly 20 years of experience across analytical chemistry, LC‑MS/MS applications, and science‑driven marketing. With a background spanning water analysis, food and environmental testing, and global LC‑MS/MS workflow launches, he specializes in translating complex analytical challenges into practical, regulation‑ready solutions for routine laboratories.</span></p></blockquote><blockquote><p><strong>Presenter:&nbsp;</strong>Margot Lee (Senior Scientist, Waters Corporation)</p><p>Margot Lee is a Senior Scientist at Waters Corporation, where she develops applications for PFAS (per- and polyfluoroalkyl substances) analysis using LC-MS/MS. She has worked at Waters since 2022 and has a background in biology with a career in analytical chemistry. After contributing to the validation of Waters’ dual-phase SPE cartridges for PFAS analysis, she joined the PFAS applications team in 2024. Her current work focuses on manual and automated extractions of PFAS in environmental and food matrices. She is passionate about advancing understanding of contaminants that impact public health and sharing practical methods that support the critical research of scientists around the world.</p></blockquote><blockquote><p><strong>Presenter: </strong>MJ Madden (Technical Support Manager and Project Manager, PromoChrom Technologies)</p><p>MJ Madden (They/She) earned a Master’s in Chemistry with honors from the University of British Columbia and joined PromoChrom Technology in 2023. As Technical Support Manager and Project Manager for new product development, MJ combines scientific expertise with a passion for customer success. They are currently leading initiatives to expand PromoChrom’s support services, including the launch of a comprehensive online support guide and enhanced field service capabilities for repairs and preventive maintenance. MJ brings a forward-looking perspective to environmental technology, helping customers adopt innovative solutions with confidence.<br>&nbsp;</p></blockquote>

Separation Science: Advancing PFAS Analysis - From Hidden Precursors to Food Safety Workflows

Advancing PFAS Analysis: From Hidden Precursors to Food Safety Workflows

Master PFAS contamination analysis. Discover hydrolysis for textils/precursors and automated direct Blend & Inject LC-MS/MS workflows for food matrices

Advancing PFAS Analysis: Hidden Precursors & Food Safety

<div><div container-id="cq-colctrl-lt0" comp-id="A1"><div><p><strong>Analytical laboratories face a challenging reality: Lower regulatory limits demand higher sensitivity, yet complex sample matrices can compromise data precision and instrument uptime. Shimadzu's latest LCMS-8065XE addresses this challenge with advanced ion source design, optimised ion transmission, and ultra-fast polarity switching technology.</strong></p><p>In this webinar, we will analyze real-world performance data demonstrating how LCMS-8065XE enables high sensitivity analysis even in complex matrices. You will see how to maintain exceptional quantitative precision during rapid chromatographic runs across environmental, pharmaceutical, and food safety workflows.</p><h4><strong>Learning Objectives</strong></h4><ul><li>Explore the engineering innovations behind the LCMS-8065XE that deliver a new benchmark in triple quadrupole sensitivity and ion transmission</li><li>Learn how improved sensitivity and signal stability can be translated into ROI - maximize daily throughput, reduced downtime, and increase overall data confidence</li><li>See how the LCMS-8065XE seamlessly integrates into a complete, high-efficiency LCMS workflow</li></ul><blockquote><p><strong>Presenter: </strong>Yap Siew Qi (Senior Product Specialist (LCMS), Shimadzu (Asia Pacific), Pte Ltd</p></blockquote></div></div></div>

Shimadzu: Meet LCMS-8065XE: Achieving High-Throughput Ultra-Trace Analysis 

Meet LCMS-8065XE: Achieving High-Throughput Ultra-Trace Analysis

we will analyze real-world performance data demonstrating how LCMS-8065XE enables high sensitivity analysis even in complex matrices.

LCMS-8065XE for High-Throughput Ultra-Trace Analysis 

<p><strong>In this SelectScience® TechTalk, Dr. Stefan Christian Gaugler, Professor of Applied Analytics at the Institute for Chemistry and Bioanalytics, University of Applied Sciences Northwestern Switzerland (FHNW), will provide an up-to-date overview of per- and polyfluoroalkyl substances (PFAS), focusing on their environmental impact, regulatory landscape, and associated analytical challenges. Highlighting the growing concern surrounding PFAS contamination across Europe, alongside the complexity arising from their chemical diversity and persistence.</strong></p><p>The session will explore current analytical workflows and sample preparation techniques, including the use of a novel PFAS-selective polymer for micro solid-phase extraction (µSPE), supporting efficient and automated analysis across diverse sample matrices. Attendees will gain insight into approaches for detecting both ultra-short and long-chain PFAS, as well as practical strategies to improve sensitivity, selectivity, and sustainability in PFAS analysis.</p><h4><strong>What will this webinar cover?</strong></h4><ul><li>The environmental relevance and regulatory developments surrounding PFAS in Europe.</li><li>The analytical challenges associated with PFAS diversity, including ultra-short and long-chain compounds.</li><li>Modern analytical workflows for PFAS detection using LC-MS/MS and GC-MS/MS techniques.</li><li>The advantages of novel PFAS-selective polymer-based µSPE methods for efficient and automated sample preparation.</li></ul><blockquote><p><strong>Speaker: </strong>Prof. Dr. Stefan Christian Gaugler (Professor of Applied Analytics at the Institute for Chemistry and Bioanalytics, University of Applied Sciences Northwestern Switzerland (FHNW))</p><p>Prof. Dr. Stefan Christian Gaugler is a researcher and lecturer at FHNW with a background in life sciences and analytical chemistry, driven by a long-standing interest in translating complex biomarker diagnostics into accessible solutions. Over the past 14 years, his work has focused on microsampling technologies, particularly dried blood spot (DBS) analysis.</p><p>He currently leads the micro lab at FHNW, where the team operates one of the world’s most technologically advanced dried blood spot laboratories and develops advanced methods for trace analysis of emerging contaminants. Alongside his research, he teaches advanced analytical techniques and laboratory automation, with a strong focus on bridging academia and real-world application.</p><p>His current work, including this presentation, focuses on advancing PFAS analysis to better understand and address their impact on human health and the environment.</p></blockquote><blockquote><p><strong>Moderator: </strong>Cameron Smith-Craig (Pharma and Applied Sciences Editor, SelectScience)</p></blockquote>

SelectScience: Advancing PFAS analytics across complex matrices

Advancing PFAS analytics across complex matrices

Discover automated µSPE solutions for PFAS analysis. Learn strategies from FHNW experts to overcome matrix challenges for ultra-short & long chains.

Advancing PFAS Analytics Across Complex Matrices via µSPE

<h4><strong>What’s trending across Asia and what you should know next</strong></h4><p><strong>PFAS Asia Summit is back in 2026! Join us with leading experts across science and industry to explore the latest PFAS developments shaping Asia. From evolving regulatory frameworks to cutting-edge research and analytical innovation, this summit offers a focused platform to understand emerging risks, industry responses - helping you stay informed and prepared in a rapidly changing PFAS landscape.</strong></p><h4><strong>What you will learn:</strong></h4><ul><li>Latest PFAS regulatory updates across global and Asian markets</li><li>Emerging PFAS trends in key industries, including agriculture, electronics, and pharmaceuticals</li><li>Advances in sample preparation and integrated LC-MS/MS technologies for PFAS detection and analysis</li></ul><h4><strong>Agenda</strong></h4><h5><strong>09:00 - 09:05 a.m. Welcome &amp; Introduction</strong><br>&nbsp;</h5><h5><strong>09:05 - 09:35 a.m. PFAS around the world - Regulatory and analytical trends</strong></h5><ul><li>Holly Lee (SCIEX)<br>&nbsp;</li></ul><h5><strong>09:35 - 10:05 a.m. Utilizing LC-MS for proactive PFAS detection in Pharma</strong></h5><ul><li>Eshani Galermo (SCIEX)<br>&nbsp;</li></ul><h5><strong>10:05 - 10:35 a.m. Advanced strategies in LC-MS/MS for clean-up and analysis of PFAS compounds in various sample matrices</strong></h5><ul><li>Namrata Saxena (Phenomenex)<br>&nbsp;</li></ul><h5><strong>10:35 - 11:00 a.m. Behavior and metabolic effects of PFAS in wheat</strong></h5><ul><li>Yanwei Zhang (China)<ul><li><i>*Speaking language: Chinese</i><br>&nbsp;</li></ul></li></ul><h5><strong>11:00 - 11:25 a.m. Standardization of IEC test methods for PFAS regulation compliance in the electrical, electronics, and automotive plastic industries</strong></h5><ul><li>Jaehak Jung (Korea)<ul><li><i>*Speaking language: Korean</i><br>&nbsp;</li></ul></li></ul><h5><strong>11:25 - 11:55 a.m. Nontarget screening of PFAS transformation products during photoelectrochemical degradation of PFAS in water</strong></h5><ul><li>Jheng-Sian, Yang (Taiwan)<ul><li><i>*Speaking language: Chinese</i><br>&nbsp;</li></ul></li></ul><h5><strong>11:55 a.m. - 12:10 p.m. Q&amp;A</strong></h5><p><i>*Sessions delivered in non-English languages will be supported with English subtitles.</i><br>&nbsp;</p><blockquote><p><strong>Speaker: </strong>Yanwei Zhang, Ph.D. (Associate Researcher, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, China)</p><p><strong>Speaker:</strong>&nbsp;Jaehak Jung, Ph.D. (Chief Technology Officer (CTO), Korea Institute of Analytical Science and Technology (KAIST), Republic of Korea)</p><p><strong>Speaker:</strong> Jheng-Sian Yang, Ph.D. (Assistant Professor, Department of Safety, Health and Environmental Engineering, National United University, Taiwan)</p><p><strong>Speaker:</strong> Holly Lee (Staff Scientist, Global Technical Marketing, Food, SCIEX)</p><p><strong>Speaker:</strong> Eshani Galermo (Staff Scientist, Pharma/Biopharma Quant Lead, SCIEX)</p><p><strong>Speaker:</strong> Namrata Saxena (Technical Manager, Asia/Pacific, Phenomenex)</p><p><strong>Speaker:</strong> See Chung Yip (Field Application Manager, SCIEX)</p></blockquote>

PFAS Asia Summit 2026

Stay ahead of the changing PFAS landscape in Asia. Learn about evolving regulations, industry impacts, and cutting-edge LC-MS/MS analytical methods

LCMS webinars focusing on LC/MS/MS - page 2