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dc.creatorShojaei, Marzieh (TTU)
dc.creatorJoyce, Abigail S.
dc.creatorFerguson, P. Lee
dc.creatorGuelfo, Jennifer L. (TTU)
dc.date.accessioned2022-06-22T14:48:51Z
dc.date.available2022-06-22T14:48:51Z
dc.date.issued2022
dc.identifier.citationShojaei, M., Joyce, A. S., Ferguson, P. L., & Guelfo, J. L. (2022). Novel per- and Polyfluoroalkyl Substances in an active-use C6-based aqueous film forming foam. Journal of Hazardous Materials Letters, 3, 100061. https://doi.org/10.1016/j.hazl.2022.100061en_US
dc.identifier.urihttps://doi.org/10.1016/j.hazl.2022.100061
dc.identifier.urihttps://hdl.handle.net/2346/89875
dc.description© 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/bync- nd/4.0/).en_US
dc.description.abstractStudies have identified hundreds of per- and polyfluoroalkyl substances (PFAS) in aqueous film forming foam (AFFF) using high resolution mass spectrometry (HRMS), and there is increasing reliance on HRMS with suspect screening in areas such as PFAS fate and transport. Characterization of active-use AFFF formulations is crucial for maintaining representative lists of PFAS for such efforts. Herein, targeted analysis, total oxidizable precursor assay (TOP), suspect screening, and non-targeted analysis were used to characterize PFAS in an AFFF currently certified for use by the U.S. military. The sum of PFAS identified during targeted analysis and suspect screening was compared to TOP, demonstrating that > 90% (20.2 mM) of the estimated total PFAS concentration (22.4 mM) was comprised of "unknown" PFAS. Tandem and multi-stage tandem mass spectra were used to annotate 10 PFAS within 9 classes, 8 of which have never been reported. A subset are fluorotelomer-based isomers of legacy, electrochemically synthesized PFAS. Thus, suspect screening efforts that rely solely on accurate mass matching may mis-annotate PFAS presented here as isomers that will have key differences in properties such as biotransformation pathways. The total estimated concentration of the 10 PFAS was ~20 mM, which agrees with the "unknown" fraction (20.2 mM) identified by TOP.en_US
dc.language.isoengen_US
dc.subjectPer and poly fluoroalkyl substances (PFAS)en_US
dc.subjectFirefighting Foamen_US
dc.subjectNontargeted Analysisen_US
dc.subjectSuspect Screeningen_US
dc.subjectHigh Resolution Mass Spectrometry (HRMS)en_US
dc.titleNovel per- and polyfluoroalkyl substances in an active-use C6-based aqueous film forming foamen_US
dc.typeArticleen_US


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