Leaching and Transformation of Perfluoroalkyl Acids and Polyfluoroalkyl Phosphate Diesters in Unsaturated Soil Column Studies

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dc.date.accessioned2022-09-09T09:56:43Z
dc.date.available2022-09-09T09:56:43Z
dc.date.issued2022-06-25
dc.description.sponsorshipGefördert im Rahmen des Projekts DEALger
dc.identifierdoi:10.17170/kobra-202209096838
dc.identifier.urihttp://hdl.handle.net/123456789/14139
dc.language.isoeng
dc.relation.doidoi:10.1002/etc.5417
dc.rightsNamensnennung 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectPFASeng
dc.subjectfate and transporteng
dc.subjectbiotransformationeng
dc.subject.ddc540
dc.subject.swdBiotransformationger
dc.subject.swdBodensäuleger
dc.subject.swdStudieger
dc.subject.swdKontaminationger
dc.subject.swdChemikalieger
dc.subject.swdChemische Verbindungenger
dc.subject.swdPerfluoroctansäureger
dc.titleLeaching and Transformation of Perfluoroalkyl Acids and Polyfluoroalkyl Phosphate Diesters in Unsaturated Soil Column Studieseng
dc.typeAufsatz
dc.type.versionpublishedVersion
dcterms.abstractPer- 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.eng
dcterms.accessRightsopen access
dcterms.creatorWeidemann, Eva
dcterms.creatorLämmer, René
dcterms.creatorStahl, Thorsten
dcterms.creatorGöckener, Bernd
dcterms.creatorBücking, Mark
dcterms.creatorBreuer, Jörn
dcterms.creatorKowalczyk, Janine
dcterms.creatorJust, Hildegard
dcterms.creatorBoeddinghaus, Runa Svenja
dcterms.creatorGaßmann, Matthias
dcterms.source.identifiereissn:1552-8618
dcterms.source.issueIssue 9
dcterms.source.journalEnvironmental Toxicology and Chemistry (ET&C)eng
dcterms.source.pageinfo2065-2077
dcterms.source.volumeVolume 41
kup.iskupfalse

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