Per- and Polyfluoroalkyl Ether Acid (PFEA) Concentrations in Indoor Dust are Higher in Homes Closer to a Fluorochemical Manufacturing Facility

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: March 31, 2025

Concentrations of 48 per- and polyfluoroalkyl substances (PFAS) were measured in settled dust samples from 65 homes GenX Exposure Study participants residing near a fluorochemical manufacturing facility North Carolina. Eight PFAS [perfluoro(3,5-dioxahexanoic) acid (aka PFO2HxA), perfluoro-2-(perfluoromethoxy)propanoic (PMPA), perfluoro-2-ethoxypropanoic (PEPA), 6:2 fluorotelomer phosphate diester (6:2 diPAP), 6:2/8:2 (6:2/8:2 perfluoropropanoic (PFPrA), perfluorodecanesulfonic (PFDS), 2-(N-ethyl-perfluorooctanesulfonamido)acetic (N-EtFOSAA)] detected >90% the samples. Dust concentrations six ether acids (PFEAs) produced at (PEPA, PMPA, perfluoro-2-methoxyacetic (PFMOAA), PFO2HxA, hexafluoropropylene oxide dimer (HFPO-DA aka GenX), ethanesulfonic acid, 2-[1-[difluoro(1,2,2,2-tetrafluoroethoxy)methyl]-1,2,2,2- tetrafluoroethoxy]-1,1,2,2-tetrafluoro- (Nafion byproduct 2) significantly negatively associated with home distance facility. Homes closer to had higher summed mass 12 targeted PFEAs (∑12PFEAs) but not ∑48PFAS. Trifluoroacetic (TFA), an ultrashort chain PFAS, three diPAPs (8:2/6:2 diPAP, 8:2 diPAP) major contributors ∑48PFAS, these compounds did show relationships distance. Based on our previous findings associating well water human serum, current indicate could be important exposure source.

Language: Английский

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All-in-one strategy to construct bifunctional covalent triazine-based frameworks for simultaneous extraction of per- and polyfluoroalkyl substances and polychlorinated naphthalenes in foods

Journal of Hazardous Materials, Journal Year: 2023, Volume and Issue: 465, P. 133084 - 133084

Published: Nov. 26, 2023

Language: Английский

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Tissue-specific distribution and bioaccumulation of perfluoroalkyl acids, isomers, alternatives, and precursors in citrus trees of contaminated fields: Implication for risk assessment

Journal of Hazardous Materials, Journal Year: 2023, Volume and Issue: 465, P. 133184 - 133184

Published: Dec. 5, 2023

Language: Английский

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Development and Application of a Liquid Chromatography–Tandem Mass Spectrometry Method for the Analysis of 20 Perfluoroalkyl Substances in Fruit and Vegetables at Sub-Parts-per-Trillion Levels

Journal of Agricultural and Food Chemistry, Journal Year: 2024, Volume and Issue: 72(33), P. 18731 - 18741

Published: Aug. 7, 2024

In response to the European Food Safety Authority's establishment of a tolerable weekly intake (TWI) for sum PFOA, PFNA, PFHxS, and PFOS, method was developed quantify confirm 20 PFASs at sub-parts-per-trillion level in fruit vegetables. Improved sensitivity achieved by (i) increasing sample intake, (ii) decreasing solvent volume final extract, (iii) using highly sensitive mass spectrometer. Except PFTrDA, target could be quantitatively determined with an apparent recovery 90–119%, limits quantitation down 0.5 ng/kg, relative standard deviation under within-laboratory reproducibility conditions <28%. The successfully applied 215 vegetable samples obtained from local grocery stores markets. Leafy vegetables prove main category responsible PFAS exposure, mainly followed PFHpA PFHxA.

Language: Английский

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Fluorine-functionalized conjugated microporous polymer as adsorbents for solid-phase extraction of nine perfluorinated alkyl substances

Journal of Chromatography A, Journal Year: 2022, Volume and Issue: 1681, P. 463457 - 463457

Published: Aug. 30, 2022

Language: Английский

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