Application of High-Resolution Mass Spectrometry to Evaluate UV-Sulfite-lnduced Transformations of Per-and Polyfluoroalkyl Substances(PFASs)in Aqueous Film-Forming Foam(AFFF)

Raul Tenorio; Andrew C.Maizel; Charles E.Schaefer

首页> 外文期刊>Environmental Science & Technology: ES&T >Application of High-Resolution Mass Spectrometry to Evaluate UV-Sulfite-lnduced Transformations of Per-and Polyfluoroalkyl Substances(PFASs)in Aqueous Film-Forming Foam(AFFF)

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Application of High-Resolution Mass Spectrometry to Evaluate UV-Sulfite-lnduced Transformations of Per-and Polyfluoroalkyl Substances(PFASs)in Aqueous Film-Forming Foam(AFFF)

机译：Application of High-Resolution Mass Spectrometry to Evaluate UV-Sulfite-lnduced Transformations of Per-and Polyfluoroalkyl Substances(PFASs)in Aqueous Film-Forming Foam(AFFF)

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UV-sulfite has been shown to effectively degrade per-and polyfluoroalkyl substances(PFASs)in single-solute experiments.We recently reported treatment of 15 PFASs,including perfluoroalkyl sulfonic acids(PFSAs),perfluoroalkyl carboxylic acids(PFCAs),and fluorotelomer sulfonic acids(FTSs),detected in aqueous film-forming foam(AFFF)using high-resolution liquid chromatography quadrupole time-of-flight mass spectrometry(LC-QTOF-MS)targeted analysis.Here,we extend the analysis within those original reaction solutions to include the wider set of PFASs in AFFF for which reactivity is largely unknown by applying recently established LC-QTOF-MS suspect screening and semiquantitative analysis protocols.Sixty-eight additional PFASs were detected(15 targeted + 68 suspect screening = 83 PFASs)with semiquantitative analysis,and their behavior was binned on the basis of(1)detection in untreated AFFF,@PFAS photogeneration,and@reactivity.These 68 structures account for an additional 20% of the total fluorine content in the AFFF(targeted + suspect screening = 57% of total fluorine content).Structure-reactivity trends were also revealed.During treatment,transformations of highly reactive structures containing sulfonamide(-SO2N-)and reduced sulfur groups(e.g.,-S-and-SO-)adjacent to the perfluoroalkyl[F(CF2)n-]or fluorotelomer[F(CF2)n(CH2)2-]chain are likely sources of PFCA,PFSA,and FTS generation previously reported during the early stages of reactions.The results also show the character of headgroup moieties adjacent to the F(CF2)n-/F(CF2)n(CH2)2-chain(e.g.,sulfur oxidation state,sulfonamide type,and carboxylic acids)and substitution along the F(CF2)n-chain(e.g.,H-,ketone,and ether)together may determine chain length-dependent reactivity trends.The results highlight the importance of monitoring PFASs outside conventional targeted analytical methodologies.

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《Environmental Science & Technology: ES&T》 |2022年第20期|14774-14787|共14页
作者
Raul Tenorio; Andrew C.Maizel; Charles E.Schaefer;
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Department of Civil and Environmental Engineering University of Illinois at Urbana-Champaign,Urbana,Illinois 61801,United States;

Department of Civil and Environmental Engineering Colorado School of Mines,Golden,Colorado 80401,United States;

CDM Smith,Edison,New Jersey 08837,United States;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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正文语种英语
中图分类环境科学、安全科学;
关键词
suspect screening; advanced reduction processes(ARPs); precursors; structure-reactivity trends;

Application of High-Resolution Mass Spectrometry to Evaluate UV-Sulfite-lnduced Transformations of Per-and Polyfluoroalkyl Substances(PFASs)in Aqueous Film-Forming Foam(AFFF)

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