Fluorine determination from fluorochemicals in fabrics applying Combustion IC
Applications | 2020 | MetrohmInstrumentation
The determination of fluorine content in textiles treated with fluorochemicals is critical due to their environmental persistence and classification as emerging contaminants.
This study demonstrates a reliable protocol for quantifying total fluorine released from water-repellent fabrics by combining pyrohydrolysis and ion chromatography.
A 20 mg fabric sample is placed in a sacrificial vial and combusted under an argon/oxygen mixture at 1050 °C. Released fluoride is absorbed in ultrapure water and introduced into an ion chromatograph with a Metrosep A Supp 4 – 250/4.0 column. The eluent comprises sodium carbonate/bicarbonate, and suppression is performed with sulfuric acid. An intelligent partial loop injection technique with inline matrix elimination enhances accuracy.
This approach offers rapid, sensitive, and reproducible determination of total fluorine, supporting quality control in textile manufacturing and environmental compliance monitoring.
Combustion ion chromatography with pyrohydrolysis delivers a robust, accurate, and efficient solution for total fluorine analysis in functionalized fabrics, addressing both regulatory requirements and environmental concerns.
Metrohm Application Note CIC–030, Version 1, April 2020
Ion chromatography
IndustriesEnergy & Chemicals
ManufacturerMetrohm
Summary
Importance of the Topic
The determination of fluorine content in textiles treated with fluorochemicals is critical due to their environmental persistence and classification as emerging contaminants.
Objectives and Overview
This study demonstrates a reliable protocol for quantifying total fluorine released from water-repellent fabrics by combining pyrohydrolysis and ion chromatography.
Methodology and Instrumentation
A 20 mg fabric sample is placed in a sacrificial vial and combusted under an argon/oxygen mixture at 1050 °C. Released fluoride is absorbed in ultrapure water and introduced into an ion chromatograph with a Metrosep A Supp 4 – 250/4.0 column. The eluent comprises sodium carbonate/bicarbonate, and suppression is performed with sulfuric acid. An intelligent partial loop injection technique with inline matrix elimination enhances accuracy.
Used Instrumentation
- 930 Compact IC Flex with Combustion Module
- IC Conductivity Detector
- MSM Rotor A
- 920 Absorber Module
- Autosampler MMS 5000
- Metrosep A Supp 4 – 250/4.0 column and guard
Results and Discussion
- Fluorine concentration: 992 mg/kg (RSD 0.6%)
- Chlorine, bromine, sulfite, and sulfate: not quantified
Benefits and Practical Applications
This approach offers rapid, sensitive, and reproducible determination of total fluorine, supporting quality control in textile manufacturing and environmental compliance monitoring.
Future Trends and Opportunities
- Coupling combustion IC with mass spectrometry for detailed speciation
- Automation and miniaturization of sample handling workflows
- Extension of the method to other matrices such as soils and plastics
- Development of enhanced detection limits for next-generation fluorochemicals
Conclusion
Combustion ion chromatography with pyrohydrolysis delivers a robust, accurate, and efficient solution for total fluorine analysis in functionalized fabrics, addressing both regulatory requirements and environmental concerns.
Reference
Metrohm Application Note CIC–030, Version 1, April 2020
Content was automatically generated from an orignal PDF document using AI and may contain inaccuracies.
Similar PDF
Fluorine in coal sample applying Metrohm Combustion IC according to ASTM D8247
|Metrohm|Applications
IC Application Note CIC–20 Fluorine in coal sample applying Metrohm Combustion IC according to ASTM D8247 Coal contains a certain amount of fluorine, chlorine, and sulfur compounds. During combustion of the coal, these components release corrosive acids (e.g., fluorine compounds…
Key words
combustion, combustioncoal, coalsuppressor, suppressorcarbonate, carbonateoven, ovenmetrohm, metrohmconductivity, conductivityabd, abdabsorber, absorbersolution, solutionses, sesdeg, degvario, variosleeve, sleevemsm
Chloride as an indicator of residual solvent presence in cellulose ester-based foil
2020|Metrohm|Applications
IC Application Note CIC–032 Chloride as an indicator of residual solvent presence in cellulose ester-based foil Chloride released from cellulose ester foil after pyrohydrolysis is analyzed by Combustion IC, indicating residual solvent levels. Chromatogram of the absorber solution after pyrohydrolysis…
Key words
combustion, combustionabsorber, absorberfoil, foilchloride, chloridecellulose, celluloserinsing, rinsingester, esteroven, ovensolution, solutionpyrohydrolysis, pyrohydrolysisconductivity, conductivityresidual, residualabd, abdpost, postvolume
Halogens in polymer by Combustion Ion Chromatography
2018|Metrohm|Applications
IC Application Note CIC–027 Halogens in polymer by Combustion Ion Chromatography Polymer materials that are used for building and decoration purposes need to be flame resistant. To reach the required level of resistance flame-retardants are added to the plain polymer.…
Key words
combustion, combustionabsorber, absorberhalogens, halogensrinsing, rinsingfleece, fleecesuppressor, suppressorcarbonate, carbonatedecoration, decorationsolution, solutionoven, ovenconductivity, conductivityabd, abdpolymer, polymerpost, postvolume
Halogen and sulfur in chlorinated and brominated halobutyl rubber applying Combustion IC
2020|Metrohm|Applications
IC Application Note CIC–21 Halogen and sulfur in chlorinated and brominated halobutyl rubber applying Combustion IC Halobutyl rubber is frequently used in the production of pharmaceutical stoppers. It is ideal for this application due to its low permeability to gases…
Key words
combustion, combustionrubber, rubberbutyl, butylbrominated, brominatedhalobutyl, halobutylchlorinated, chlorinatedsuppressor, suppressoroven, ovensulfur, sulfurconductivity, conductivityabd, abdabsorber, absorbersolution, solutionses, sesdeg
