Aqueous film-forming foams exhibit greater interfacial activity than PFOA, PFOS, or FOSA.
Sign Up to like & getrecommendations! Published in 2020 at "Environmental science & technology"
DOI: 10.1021/acs.est.0c03117
Abstract: Perfluoroalkyl acids spontaneously concentrate at air-water and non-aqueous phase liquid (NAPL)-water interfaces, which can influence their retention during subsurface transport. This work presents measurements of air- and NAPL-water interfacial tension for synthetic groundwater containing perfluorooctanoic… read more here.
Keywords: pfoa; water; pfoa pfos; aqueous film ... See more keywords
Biotransformation of 6:2 Fluorotelomer Thioether Amido Sulfonate in Aqueous Film-Forming Foams under Nitrate-Reducing Conditions.
Sign Up to like & getrecommendations! Published in 2022 at "Environmental science & technology"
DOI: 10.1021/acs.est.2c00063
Abstract: Despite the prevalence of nitrate reduction in groundwater, the biotransformation of per- and polyfluoroalkyl substances (PFAS) under nitrate-reducing conditions remains mostly unknown compared with aerobic or strong reducing conditions. We constructed microcosms under nitrate-reducing conditions… read more here.
Keywords: fluorotelomer thioether; biotransformation; aqueous film; nitrate reducing ... See more keywords
Nitrifying Microorganisms Linked to Biotransformation of Perfluoroalkyl Sulfonamido Precursors from Legacy Aqueous Film-Forming Foams
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DOI: 10.1021/acs.est.2c07178
Abstract: Drinking water supplies across the United States have been contaminated by firefighting and fire-training activities that use aqueous film-forming foams (AFFF) containing per- and polyfluoroalkyl substances (PFAS). Much of the AFFF is manufactured using electrochemical… read more here.
Keywords: sulfonamido precursors; film forming; biotransformation; aqueous film ... See more keywords