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- W4292680108 abstract "Per- and polyfluoroalkyl substances (PFAS) are persistent, bioaccumulative pollutants found in water resources at concentrations harmful to human health. Whereas current PFAS destruction strategies use nonselective destruction mechanisms, we found that perfluoroalkyl carboxylic acids (PFCAs) could be mineralized through a sodium hydroxide-mediated defluorination pathway. PFCA decarboxylation in polar aprotic solvents produced reactive perfluoroalkyl ion intermediates that degraded to fluoride ions (78 to ~100%) within 24 hours. The carbon-containing intermediates and products were inconsistent with oft-proposed one-carbon-chain shortening mechanisms, and we instead computationally identified pathways consistent with many experiments. Degradation was also observed for branched perfluoroalkyl ether carboxylic acids and might be extended to degrade other PFAS classes as methods to activate their polar headgroups are identified." @default.
- W4292680108 created "2022-08-23" @default.
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- W4292680108 date "2022-08-19" @default.
- W4292680108 modified "2023-10-01" @default.
- W4292680108 title "Low-temperature mineralization of perfluorocarboxylic acids." @default.
- W4292680108 doi "https://doi.org/10.1126/science.abm8868" @default.
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- W4292680108 hasPublicationYear "2022" @default.
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