Datum
2022-06-25Autor
Weidemann, EvaLämmer, RenéStahl, ThorstenGöckener, BerndBücking, MarkBreuer, JörnKowalczyk, JanineJust, HildegardBoeddinghaus, Runa SvenjaGaßmann, MatthiasSchlagwort
540 Chemie BiotransformationBodensäuleStudieKontaminationChemikalieChemische VerbindungenPerfluoroctansäureMetadata
Zur Langanzeige
Aufsatz
Leaching and Transformation of Perfluoroalkyl Acids and Polyfluoroalkyl Phosphate Diesters in Unsaturated Soil Column Studies
Zusammenfassung
Per- and polyfluoroalkyl substances (PFAS) are environmentally ubiquitous, anthropogenic substances with adverse effects on organisms, which shows the need to study their environmental fate and leaching behavior. In the present soil columns study, the leaching behavior and fate of nontransformable and transformable (precursors) were investigated. Ten nontransformable PFAS in two different soils, two precursors and two field soils, which were already contaminated with a mixture of PFAS, and two uncontaminated controls, were set up for a time span of 2 years. At the end of the study, the molecular balance could not be closed for nontransformable PFAS. This effect was positively correlated to the fluorinated carbon chain length. The precursors, which were both polyfluoroalkyl phosphate diesters (diPAP), had different transformation products and transformation rates, with a higher rate for 6:2 diPAP than 8:2 diPAP. After 2 years, amounts of diPAP were still found in the soil with no significant vertical movement, showing high adsorption to soils. Transformation products were estimated to be simultaneously formed. They were predominantly found in the percolation water; the amounts left in soil were negligible. Up to half of the initial precursor amounts could not be balanced and were considered missing amounts. The results of contaminated field soil experiments showed the challenge to estimate PFAS leaching without knowing all occurring precursors and complex transformation dynamics. For this purpose, it was shown that a broad examination of contaminated soil with different analytical methods can help with qualitative estimations of leaching risks. For a better quantitative estimation, analytical determination of more PFAS and a quantification of the missing amounts are needed.
Zitierform
In: Environmental Toxicology and Chemistry (ET&C) Volume 41 / Issue 9 (2022-06-25) , S. 2065-2077 ; eissn:1552-8618Förderhinweis
Gefördert im Rahmen des Projekts DEALZitieren
@article{doi:10.17170/kobra-202209096838,
author={Weidemann, Eva and Lämmer, René and Stahl, Thorsten and Göckener, Bernd and Bücking, Mark and Breuer, Jörn and Kowalczyk, Janine and Just, Hildegard and Boeddinghaus, Runa Svenja and Gaßmann, Matthias},
title={Leaching and Transformation of Perfluoroalkyl Acids and Polyfluoroalkyl Phosphate Diesters in Unsaturated Soil Column Studies},
journal={Environmental Toxicology and Chemistry (ET&C)},
year={2022}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 2022$n2022 1500 1/eng 2050 ##0##http://hdl.handle.net/123456789/14139 3000 Weidemann, Eva 3010 Lämmer, René 3010 Stahl, Thorsten 3010 Göckener, Bernd 3010 Bücking, Mark 3010 Breuer, Jörn 3010 Kowalczyk, Janine 3010 Just, Hildegard 3010 Boeddinghaus, Runa Svenja 3010 Gaßmann, Matthias 4000 Leaching and Transformation of Perfluoroalkyl Acids and Polyfluoroalkyl Phosphate Diesters in Unsaturated Soil Column Studies / Weidemann, Eva 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/http://hdl.handle.net/123456789/14139=x R 4204 \$dAufsatz 4170 5550 {{Biotransformation}} 5550 {{Bodensäule}} 5550 {{Studie}} 5550 {{Kontamination}} 5550 {{Chemikalie}} 5550 {{Chemische Verbindungen}} 5550 {{Perfluoroctansäure}} 7136 ##0##http://hdl.handle.net/123456789/14139
2022-09-09T09:56:43Z 2022-09-09T09:56:43Z 2022-06-25 doi:10.17170/kobra-202209096838 http://hdl.handle.net/123456789/14139 Gefördert im Rahmen des Projekts DEAL eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ PFAS fate and transport biotransformation 540 Leaching and Transformation of Perfluoroalkyl Acids and Polyfluoroalkyl Phosphate Diesters in Unsaturated Soil Column Studies Aufsatz Per- and polyfluoroalkyl substances (PFAS) are environmentally ubiquitous, anthropogenic substances with adverse effects on organisms, which shows the need to study their environmental fate and leaching behavior. In the present soil columns study, the leaching behavior and fate of nontransformable and transformable (precursors) were investigated. Ten nontransformable PFAS in two different soils, two precursors and two field soils, which were already contaminated with a mixture of PFAS, and two uncontaminated controls, were set up for a time span of 2 years. At the end of the study, the molecular balance could not be closed for nontransformable PFAS. This effect was positively correlated to the fluorinated carbon chain length. The precursors, which were both polyfluoroalkyl phosphate diesters (diPAP), had different transformation products and transformation rates, with a higher rate for 6:2 diPAP than 8:2 diPAP. After 2 years, amounts of diPAP were still found in the soil with no significant vertical movement, showing high adsorption to soils. Transformation products were estimated to be simultaneously formed. They were predominantly found in the percolation water; the amounts left in soil were negligible. Up to half of the initial precursor amounts could not be balanced and were considered missing amounts. The results of contaminated field soil experiments showed the challenge to estimate PFAS leaching without knowing all occurring precursors and complex transformation dynamics. For this purpose, it was shown that a broad examination of contaminated soil with different analytical methods can help with qualitative estimations of leaching risks. For a better quantitative estimation, analytical determination of more PFAS and a quantification of the missing amounts are needed. open access Weidemann, Eva Lämmer, René Stahl, Thorsten Göckener, Bernd Bücking, Mark Breuer, Jörn Kowalczyk, Janine Just, Hildegard Boeddinghaus, Runa Svenja Gaßmann, Matthias doi:10.1002/etc.5417 Biotransformation Bodensäule Studie Kontamination Chemikalie Chemische Verbindungen Perfluoroctansäure publishedVersion eissn:1552-8618 Issue 9 Environmental Toxicology and Chemistry (ET&C) 2065-2077 Volume 41 false
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