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<p>This paper presents a screening method for diverse classes of per- and polyfluoroalkyl substances (PFAS) in consumer products using a Pyrolysis Gas Chromatography Mass Spectrometer (Py-GC–MS). During the pyrolysis process, polar functional groups (carboxylic or sulfonic) are thermally dissociated, allowing the non-polar perfluoroalkyl moieties to elute through the GC column. We successfully detected various classes of PFAS, from non-polymeric forms of different chain lengths to polymeric forms, within 30&#xa0;min, achieving detection limits below 1/100 of the typical intentional use concentrations of PFAS in consumer products. Therefore, the screening method can detect even low levels of intentionally added PFAS within a comfortable margin.</p>

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Comprehensive screening of per- and polyfluoroalkyl substances in consumer products using pyrolysis GC–MS

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年1月15日

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  • Hiroyuki Yanagisawa,
  • Kenichi Obayashi,
  • Masataka Furuta,
  • Shigehiko Fujimaki

摘要

This paper presents a screening method for diverse classes of per- and polyfluoroalkyl substances (PFAS) in consumer products using a Pyrolysis Gas Chromatography Mass Spectrometer (Py-GC–MS). During the pyrolysis process, polar functional groups (carboxylic or sulfonic) are thermally dissociated, allowing the non-polar perfluoroalkyl moieties to elute through the GC column. We successfully detected various classes of PFAS, from non-polymeric forms of different chain lengths to polymeric forms, within 30 min, achieving detection limits below 1/100 of the typical intentional use concentrations of PFAS in consumer products. Therefore, the screening method can detect even low levels of intentionally added PFAS within a comfortable margin.