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Partitioning Behavior of Per- and Polyfluoroalkyl Compounds between Pore Water and Sediment in Two Sediment Cores from Tokyo Bay, Japan
Institute for Coastal Research, GKSS Research Centre Geesthacht, Geesthacht, Germany; Institute for Ecology and Environmental Chemistry, Leuphana University of Lüneburg, Lüneburg, Germany.
National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan.
Department of Biology and Chemistry, City University of Hong Kong, Hong Kong, Hong Kong.ORCID-id: 0000-0001-6800-5658
National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan.
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2009 (Engelska)Ingår i: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851, Vol. 43, nr 18, s. 6969-6975Artikel i tidskrift (Refereegranskat) Published
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Abstract [en]

The partitioning behavior of per- and polyfluoroalkyl compounds (PFCs) between pore water and sediment in two sediment cores collected from Tokyo Bay, Japan, was investigated. In addition, the fluxes and temporal trends in one dated sediment core were studied. Short-chain perfluoroalkyl carboxylic acids (PFCAs) (C ≤ 7) were found exclusively in pore water, while long-chain PFCAs (C ≥ 11) were found only in sediment. The perfluoroalkyl sulfonates (PFSAs), n-ethylperfluoro-1-octanesulfonamidoacetic acid (N-EtFOSAA), and perfluorooctane sulfonamide (PFOSA) seemed to bind more strongly to sediment than PFCAs. The enrichment of PFCs on sediment increased with increasing organic matter and decreasing pH. The perfluorocarbon chain length and functional group were identified as the dominating parameters that had an influence on the partitioning behavior of the PFCs in sediment. The maximum ΣPFC contamination in sediment was observed in 2001-2002 to be a flux of 197 pg cm-2 yr-1. Statistically significant increased concentrations in Tokyo Bay were found for perfluorooctanesulfonate (PFOS) (1956-2008), perfluorononanoic acid (PFNA) (1990-2008), and perfluoroundecanoic acid (PFUnDA) (1990-2008). Concentrations of PFOSA and N-EtFOSAA increased between 1985 and 2001, but after 2001, the concentration decreased significantly, which corresponded with the phase out of perfluorooctyl sulfonyl fluoride-based compounds by the 3M Company in 2000.

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American Chemical Society (ACS), 2009. Vol. 43, nr 18, s. 6969-6975
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URN: urn:nbn:se:oru:diva-49985DOI: 10.1021/es901213sISI: 000269656200017PubMedID: 19806729Scopus ID: 2-s2.0-70349099490OAI: oai:DiVA.org:oru-49985DiVA, id: diva2:950416
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Funding Agencies:

Federal Ministry of Education and Research JPN 08/A02

Hong Kong Research Grants Council CityU 160408

National Institute of Animal Health, Japan

Tillgänglig från: 2016-07-29 Skapad: 2016-04-28 Senast uppdaterad: 2017-11-28Bibliografiskt granskad

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