62944 2025 eng 7338 7347 14 59 article American Chemical Society (ACS) Columbus, Ohio 1 -- -- -- This study presents a novel semiquantification approach for nontarget screening (NTS), combining matrix-matched calibration and ionization class-specific average calibration curves (ACCs) to address the lack of analytical reference standards for most per- and polyfluoroalkyl substances (PFAS). Ionization class-specific ACCs for carboxylic and sulfonic acids, sulfonamides, and cationic PFAS result in high accuracy, with median absolute accuracy quotients below 2.27×. The approach was applied to soil impacted by aqueous film-forming foam (AFFF) contamination. A total of 96 tentatively identified PFAS were semiquantified in addition to 28 quantified compounds based on available standards. Semiquantified concentrations exceeded those of target analytes, demonstrating the critical role of this method in capturing broader PFAS contamination. In this case, validation against extractable organofluorine (EOF) showed a 102% closed mass balance. The innovative approach not only enables comprehensive PFAS contamination assessment in complex matrices but also expands the scope of the NTS for environmental monitoring, remediation, and risk assessment of AFFF-contaminated sites. Environmental science and technology 10.1021/acs.est.4c14255 1520-5851 urn:nbn:de:kobv:b43-629445 true {"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,4,3]],"date-time":"2025-04-03T11:10:11Z","timestamp":1743678611751,"version":"3.40.3"},"reference-count":57,"publisher":"American Chemical Society (ACS)","license":[{"start":{"date-parts":[[2025,4,3]],"date-time":"2025-04-03T00:00:00Z","timestamp":1743638400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002347","name":"Bundesministerium f?r Bildung und Forschung","doi-asserted-by":"publisher","award":["02WGW1665C"],"id":[{"id":"10.13039\/501100002347","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100007636","name":"Deutsche Bundesstiftung Umwelt","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100007636","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Environ. 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Capitain M. Schüßler B. Bugsel J. Zweigle Christian Vogel Peter Leube C. Zwiener eng uncontrolled Per- and polyfluoroalkyl substances (PFAS) eng uncontrolled Contaminated soil eng uncontrolled Non-targeted analysis eng uncontrolled Combustion ion chromatography Analytische Chemie Spezielle Themen Sanitär- und Kommunaltechnik; Umwelttechnik 4 Material und Umwelt 4.4 Thermochemische Reststoffbehandlung und Wertstoffrückgewinnung Umwelt Umwelt-Material-Interaktionen Chemie und Prozesstechnik Chemische Charakterisierung und Spurenanalytik Verlagsliteratur Datei für die Öffentlichkeit verfügbar ("Open Access") Wissenschaftliche Artikel der BAM Gefährliche Stoffe Bundesanstalt für Materialforschung und -prüfung (BAM) https://opus4.kobv.de/opus4-bam/files/62944/capitain-et-al-2025-EST.pdf