학술논문
Degradation and Plant Transfer Rates of Seven Fluorotelomer Precursors to Perfluoroalkyl Acids and F-53B in a Soil-Plant System with Maize ( Zea mays L .).
Document Type
Academic Journal
Author
Just H; Department Safety in the Food Chain, German Federal Institute for Risk Assessment, Unit Feed, and Feed Additives, Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany.; Göckener B; Fraunhofer-Institute for Molecular Biology and Applied Ecology IME, Auf dem Aberg 1, 57392 Schmallenberg-Grafschaft, Germany.; Lämmer R; Fraunhofer-Institute for Molecular Biology and Applied Ecology IME, Auf dem Aberg 1, 57392 Schmallenberg-Grafschaft, Germany.; Wiedemann-Krantz L; Fraunhofer-Institute for Molecular Biology and Applied Ecology IME, Auf dem Aberg 1, 57392 Schmallenberg-Grafschaft, Germany.; Stahl T; Chemical and Veterinary Analytical Institute Münsterland-Emscher-Lippe (CVUA-MEL), Joseph-König-Strasse 40, 48147 Münster, Germany.; Breuer J; Agricultural Technology Centre Augustenberg (LTZ), Neßlerstraße 25, 76227 Karlsruhe, Germany.; Gassmann M; Department of Hydrology and Substance Balance, University of Kassel, Kurt-Wolters-Strasse 3, 34125 Kassel, Germany.; Weidemann E; Department of Hydrology and Substance Balance, University of Kassel, Kurt-Wolters-Strasse 3, 34125 Kassel, Germany.; Bücking M; Fraunhofer-Institute for Molecular Biology and Applied Ecology IME, Auf dem Aberg 1, 57392 Schmallenberg-Grafschaft, Germany.; School of Chemistry, Monash University, Box 23, Victoria 3800, Australia.; Kowalczyk J; Department Safety in the Food Chain, German Federal Institute for Risk Assessment, Unit Feed, and Feed Additives, Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany.
Source
Publisher: American Chemical Society Country of Publication: United States NLM ID: 0374755 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1520-5118 (Electronic) Linking ISSN: 00218561 NLM ISO Abbreviation: J Agric Food Chem Subsets: MEDLINE
Subject
Language
English
Abstract
Fluorotelomer precursors in soil constitute a reservoir for perfluoroalkyl acids (PFAAs) in the environment. In the present study, precursor degradation and transfer rates of seven fluorotelomer precursors and F-53B (chlorinated polyfluoroalkyl ether sulfonates) were investigated in pot experiments with maize plants ( Zea mays L .). The degradation of fluorotelomer precursors to perfluoroalkyl carboxylic acids (PFCAs) and their uptake spectra corresponded to those of fluorotelomer alcohol (FTOH) in terms of the number of perfluorinated carbon atoms. Short-chain PFCAs were translocated into the shoots (in descending order perfluoropentanoic, perfluorobutanoic, and perfluorohexanoic acid), whereas long-chain PFCAs mainly remained in the soil. In particular, fluorotelomer phosphate diesters (diPAPs) were retained in the soil and showed the highest degradation potential including evidence of α-oxidative processes. F-53B did not degrade to PFAAs and its constituents were mainly detected in the roots with minor uptake into the shoots. The results demonstrate the important role of precursors as an entry pathway for PFCAs into the food chain.