Meeting EU Drinking Water Standards: The Critical Role of Sample Prep in Trace Contaminant Analysis

<p><strong>Although modern agriculture needs to be based on accurate real-time data on soil, plant, and environmental conditions, affordable, sufficiently sensitive, and robust monitoring devices for this purpose are currently missing. According to scientists, low-cost sensors based on new smart materials and printing technologies offer a suitable solution. The results of multidisciplinary research thus far and proposals for the development of these devices have been presented by researchers from Czechia, Great Britain, Spain, and the USA in a review article in the prestigious journal </strong><a target="_blank" rel="noopener noreferrer" href="https://www.nature.com/articles/s41467-026-68778-6#Abs1"><i><strong>Nature Communications</strong></i></a><strong>.</strong></p><p>“<i>Sensor technologies for monitoring plant health are still in their infancy. Only simple sensors capable of monitoring basic parameters such as pH, soil moisture, or temperature are commonly available on the market. However, if farmers are to face current challenges, including climate change, and ensure sufficient food for humanity, they need much more effective tools that will enable them to monitor, for example, various pathogens, including bacteria and fungi. In our opinion, a suitable solution is a combination of new smart materials and printing for the production of inexpensive, durable, and scalable materials</i>,” said the article’s first author, <strong>David Panáček</strong> from CATRIN, who worked on the study during his internship at Imperial College London.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/CATRIN_Soucasne_senzory_nestaci_Vedci_navrhuji_novou_cestu_ke_sledovani_zdravi_rostlin_b4014952a3.jpg" alt="CATRIN: David Panáček" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_CATRIN_Soucasne_senzory_nestaci_Vedci_navrhuji_novou_cestu_ke_sledovani_zdravi_rostlin_b4014952a3.jpg 208w," sizes="100vw" width="1536" height="1152"></p><p>Sensors for monitoring plant health, for example, lag behind similar devices used in human medicine. According to the authors, advances in materials science, which will enable the development of scalable sensor technologies, play a key role in this potential shift. “<i>Printing techniques, including inkjet printing, screen printing, aerosol printing, 3D printing, and direct laser writing, offer flexible ways to produce flexible sensors, large-area sensors, and sensors integrated directly into plants. The review article summarizes recent advances in printable low-dimensional materials for agricultural sensors, analyzes their physico-chemical properties in relation to sensor performance, and discusses key challenges and future opportunities requiring interdisciplinary integration</i>,” said one of the corresponding authors, <strong>Michal Otyepka</strong>.</p><p>The research brought together materials scientists, chemists, biologists, sensing experts, and printing technology specialists. Materials research and the use of graphene-based smart materials were led by scientists from CATRIN at Palacký University and VŠB-Technical University of Ostrava. Plant biologists from CATRIN contributed their knowledge of plant development, their responses to stress conditions, and the monitoring of their properties. Researchers from Imperial College London took care of the electronics, while representatives from<a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/companies/36"><strong> CEITEC – VUT</strong></a> focused on printing technologies. The team also included leading experts in sensing from the Catalan Institute of Nanoscience and Nanotechnology in Barcelona, and Joseph Wang of the University of California San Diego, the “father of sensing and electrochemistry,” also contributed his extensive knowledge.</p><p>“<i>This is a groundbreaking study on this topic, which has managed to attract some truly big names in their respective fields. Last but not least, the study demonstrates that interdisciplinarity at CATRIN gives rise to completely new and promising research topics, such as plant sensing and its use for studying plant-environment interactions and smart agriculture,</i>” added another corresponding author, <strong>Nuria De Diego</strong>.</p>

Current sensors are not good enough. Scientists propose a new way to monitor plant health

<p><strong>In this episode of the Concentrating on Chromatography podcast, host David Oliva interviews Ainslie Chen about her cutting-edge research on hemoglobin variant testing using liquid chromatography-high resolution mass spectrometry (LC-HR-MS). Ainslie discusses her novel method for separating and identifying hemoglobin subunits with mass shifts less than 1 Da, overcoming critical limitations in conventional clinical assays.</strong></p><p>Hear firsthand how her team developed an LC-HR-MS workflow using a C4 reversed-phase column, tackled technical challenges (including why C18 columns fell short), and achieved unprecedented sensitivity for variant detection in both adult and neonatal samples. The conversation touches on the potential of mass spectrometry to revolutionize clinical diagnostics, the importance of reproducibility, barriers to adoption in routine labs, and how teamwork drives scientific innovation.</p><p>Perfect for analytical chemists, clinical laboratorians, and anyone interested in the future of protein variant analysis, this episode also features Ainslie’s advice for early-career scientists and insights from her first ACS poster presentation.</p><h4><strong>Key Highlights:</strong></h4><ul><li>Motivation behind improving hemoglobinopathy testing &nbsp;</li><li>Technical advantages of LC-HR-MS over gene sequencing and CE &nbsp;</li><li>The crucial role of the C4 column in resolving challenging samples &nbsp;</li><li>Critical parameters for reproducible LC-HR-MS workflows &nbsp;</li><li>Barriers and outlook for clinical adoption of advanced mass spectrometry &nbsp;</li><li>The value of teamwork and mentorship in scientific research &nbsp;</li><li>Direct insights from recent ACS conference experiences</li></ul><h3><strong>Video transcription</strong></h3><p>In this interview, <strong>Ainslie Chen</strong> discusses her research on improving the detection and identification of hemoglobin variants using <strong>liquid chromatography coupled with high-resolution mass spectrometry (LC-HRMS)</strong>. The work addresses limitations of conventional hemoglobinopathy testing, which often struggles to resolve very small mass differences between closely related hemoglobin subunits. Because even a single amino-acid substitution can significantly alter hemoglobin structure and function, high analytical resolution is essential for accurate diagnosis of conditions such as anemia and sickle cell disease.</p><p>Chen explains why her team selected LC-HRMS over established clinical techniques like <strong>capillary electrophoresis</strong> and <strong>gene sequencing</strong>. While sequencing offers excellent accuracy, it is time-consuming, costly, and requires extensive sample preparation, making it impractical for routine clinical workflows. Capillary electrophoresis enables subunit separation but lacks the resolving power needed to distinguish variants differing by less than one Dalton. In contrast, high-resolution mass spectrometry provides both structural specificity and sensitivity, enabling confident identification of subtle hemoglobin variants with minimal sample preparation.</p><p>A key methodological insight from the project was the use of a <strong>C4 reversed-phase LC column</strong> instead of the more common C18 column. Chen describes how the shorter carbon chain and larger pore size of C4 columns improved protein elution and reduced denaturation, leading to more reproducible separations. Critical parameters for reproducibility included consistent mobile-phase composition (0.1% formic acid in water and acetonitrile), controlled temperature (60 °C for LC, ~320 °C capillary temperature), and stable chromatographic conditions.</p><p>Beyond hemoglobin analysis, Chen highlights the broader potential of high-resolution mass spectrometry in <strong>proteoform analysis</strong> and clinical diagnostics, including emerging applications in cancer detection. She acknowledges current barriers to clinical adoption—such as energy demands and instrument infrastructure—but points to advances like <strong>miniaturized mass spectrometers</strong> as promising steps toward wider use. The interview concludes with advice for young scientists: don’t hesitate to reach out to mentors, embrace collaboration, and view analytical chemistry as a versatile tool that bridges medicine, biology, environmental science, and beyond.</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>

Unlocking Hemoglobin Variant Detection: LC-HR-MS Breakthrough with Ainslie Chen

Article

Video

Environment

Scientific article

Interview

Science and research

The Czech Advanced Technology and Research Institute (CATRIN) at Palacký University is a cutting-edge scientific hub dedicated to advancing research in the fields of nanotechnology, biotechnology, and biomedicine. At its core, CATRIN boasts outstanding scientific teams, featuring international researchers. We emphasize interdisciplinarity, foster global collaborations, and work to translate our research findings into practical applications.

CATRIN

Organomation, founded in 1959, designs and manufactures high-quality nitrogen evaporators and extraction systems. Known for innovation and durability, their lab instruments are used globally for efficient sample preparation with strong customer support.

Organomation

Waters ACQUITY UPC2 System

Waters ACQUITY UPC2 System allows the manipulation of fluids with a wide range of polarities and enables scientists to separate, analyze, and understand compounds that have challenged all other LC and GC technologies.

<div><div><h4><strong>The ease of reversed-phase meets the power of normal-phase</strong></h4></div></div><div><div><p><strong>In reversed-phase chromatography, polar compounds are eluted first, causing routine and complex separation challenges. With convergence chromatography, however, polar compounds are retained and eluted last - providing the separation power of normal-phase liquid chromatography (LC) with the ease-of-use of reversed-phase LC.</strong></p><div><div><div><div><p>Using green and non-toxic <strong>compressed liquid CO₂</strong> as a primary mobile phase, the <strong>ACQUITY UPC2® System</strong> delivers the ability to precisely vary <strong>mobile phase strength, pressure, and temperature</strong>. The ability to <strong>fine-tune the resolving power and selectivity</strong> of the system enables better control over the retention of analytes for <strong>separating, detecting, and quantifying</strong> structural analogs, isomers, and <strong>enantiomeric and diastereomeric mixtures</strong> – all compounds that are often a challenge to separate by any other means.</p><ul><li>The chromatographic principles and selectivity of <strong>normal-phase LC</strong></li><li>The ease of use and method development simplicity of <strong>reversed-phase LC</strong></li><li>The use of <strong>gradients across the widest polarity range</strong></li><li><strong>Chiral and achiral separations</strong> in one system, with unequaled speed and confidence</li></ul></div></div><div><div><h5><strong>Recommended Use</strong></h5><p>To solve routine and complex separations challenges that require<strong> unparalleled selectivity and ease-of-use</strong>.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_ACQUITY_UPC_2_System_43f37e1130.jpg" alt="Waters ACQUITY UPC2 System: ACQUITY UPC2 System gives scientists the ability to precisely vary mobile phase strength, pressure, and temperature." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_ACQUITY_UPC_2_System_43f37e1130.jpg 234w," sizes="100vw" width="1024" height="682"></p><div><div><h3><strong>Bringing ease of use to normal-phase LC</strong></h3><p>By providing the ability to precisely vary <strong>mobile phase strength, pressure, and temperature</strong>, the <strong>Waters ACQUITY UPC<sup>2</sup> System</strong> gives scientists the power to better control the retention of analytes for <strong>separating, detecting, and quantifying</strong> structural analogs, isomers, and <strong>enantiomeric and diastereomeric mixtures</strong>.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_ACQUITY_UPC_2_System_6_c2a18a19b3.jpg" alt="Waters ACQUITY UPC2 System: Separation of propranolol and hydroxy metabolites. Note that each hydroxy metabolite has an R and S form." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_ACQUITY_UPC_2_System_6_c2a18a19b3.jpg 235w," sizes="100vw" width="1024" height="681"></p></div></div><div><div><h3><strong>The world's first convergence chromatography system</strong></h3><p>Unique in its capabilities, the pioneering <strong>ACQUITY UPC<sup>2</sup> System</strong> delivers what the rest of the industry never could – a system, based on the principles of <strong>normal-phase LC</strong>, with the <strong>ease-of-use of reversed-phase LC</strong>, and purposefully built for analytical performance, placing <strong>convergence chromatography</strong> atop the list of separations tools in the kit of all analytical chemists.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_ACQUITY_UPC_2_System_7_2efdc13cd5.jpg" alt="Waters ACQUITY UPC2 System: UPC2 analysis can be 30x faster and use 75x less solvent per run - all with 100x lower cost per analysis." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_ACQUITY_UPC_2_System_7_2efdc13cd5.jpg 182w," sizes="100vw" width="1024" height="879"></p></div></div><div><div><h3><strong>Unparalleled resolving power and selectivity</strong></h3><p>With its <strong>separation potential for a far broader chemical spectrum</strong> of applications than that of reversed-phase LC-based instrumentation, the <strong>ACQUITY UPC<sup>2</sup> System</strong> leverages <strong>convergence chromatography</strong> to enable superior performance, using <strong>inexpensive, compressed CO₂</strong> as a non-toxic mobile-phase.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_ACQUITY_UPC_2_System_8_655b0ad41e.jpg" alt="Waters ACQUITY UPC2 System: The ACQUITY UPC2-MS FFA analysis provides a simple and fast method with a significant reduction in analysis time compared to alternative techniques such as GC-MS, which requires FAME derivatization." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_ACQUITY_UPC_2_System_8_655b0ad41e.jpg 232w," sizes="100vw" width="1024" height="691"></p></div></div><div><div><h3><strong>Retention mechanisms and orthogonality to RPLC</strong></h3><p>Harnessing what's now known as <strong>convergence chromatography</strong>, an evolution of the traditional <strong>SFC</strong> technique, the <strong>ACQUITY UPC<sup>2</sup> System</strong> has the power to create <strong>selective separations of structurally similar chiral and achiral compounds</strong>.</p><p>The <strong>miscibility of CO₂ with a wide range of polar and non-polar organic solvents</strong> has made the liquid CO₂-based mobile phase versatile enough to separate a much wider range of compounds than reversed-phase LC, especially for mixtures containing polar compounds. Not only can CO₂-based solvents be used with both polar and non-polar stationary phases, but chromatography can be influenced by modulating solvent gradients with a much wider choice of columns using the same <strong>mass spectrometry-compatible co-solvents</strong>.</p><p>Being <strong>orthogonal to reversed-phase LC</strong>, <strong>UP<sup>C2</sup> separations</strong> often show an <strong>inverse order of elution</strong> among groups of analytes. In combination with various detection techniques, this orthogonality is <strong>valuable for confirming analyte identity in complex matrices</strong>.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_ACQUITY_UPC_2_System_9_dc03654861.jpg" alt="Waters ACQUITY UPC2 System: With ACQUITY UPC2 System, orthogonality to the most commonly used high/low pH approach in reversed-phase can be clearly seen as a useful addition to the separation challenges faced by synthesis analysis." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_ACQUITY_UPC_2_System_9_dc03654861.jpg 200w," sizes="100vw" width="1024" height="801"></p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_ACQUITY_UPC_2_System_2_454af0c6e1.jpg" alt="Waters ACQUITY UPC2 System: ACQUITY UPC2 System with ACQUITY QDa Detector." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_ACQUITY_UPC_2_System_2_454af0c6e1.jpg 234w," sizes="100vw" width="1024" height="682"><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_ACQUITY_UPC_2_System_3_72c8ad4d63.jpg" alt="Waters ACQUITY UPC2 System: ACQUITY UPC2 System with Xevo TQ-XS." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_ACQUITY_UPC_2_System_3_72c8ad4d63.jpg 234w," sizes="100vw" width="1024" height="682"><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_ACQUITY_UPC_2_System_4_e2672f200d.jpg" alt="Waters ACQUITY UPC2 System: ACQUITY UPC2 System with ACQUITY UPLC ELS, ACQUITY UPC2 PDA, and ACQUITY QDa Detectors." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_ACQUITY_UPC_2_System_4_e2672f200d.jpg 234w," sizes="100vw" width="1024" height="682"><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_ACQUITY_UPC_2_System_5_18c501a159.jpg" alt="Waters ACQUITY UPC2 System: ACQUITY UPC2 System with Xevo G2-XS QTof." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_ACQUITY_UPC_2_System_5_18c501a159.jpg 234w," sizes="100vw" width="1024" height="682"></p></div></div></div></div></div></div></div></div>

Products focused on SFC distributed by Waters Corporation (Europe) - page 1

Related content

Unlocking Hemoglobin Variant Detection: LC-HR-MS Breakthrough with Ainslie Chen

Current sensors are not good enough. Scientists propose a new way to monitor plant health

Meeting EU Drinking Water Standards: The Critical Role of Sample Prep in Trace Contaminant Analysis