Spatial Distribution of Perfluoroalkyl Acids in Surface Sediments of The
Science of the Total Environment 511 (2015) 145–152 Contents lists available at ScienceDirect Science of the Total Environment journal homepage: www.elsevier.com/locate/scitotenv Spatial distribution of perfluoroalkyl acids in surface sediments of the German Bight, North Sea Zhen Zhao a,b,c, Zhiyong Xie a,⁎, Jianhui Tang c,⁎, Gan Zhang b,RalfEbinghausa a Helmholtz-Zentrum Geesthacht, Centre for Materials and Coastal Research, Institute of Coastal Research, Max-Plank Street 1, 21502 Geesthacht, Germany b State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, CAS, Kehua Road 511, Guangzhou 510631, China c Yantai Institute of Coastal Zone Research, CAS, Chunhui Road 17, Yantai 264003, China HIGHLIGHTS • Declining PFOA and PFOS levels implied the effect of regulating C8-based products • PFBA and PFBS occurred in the sediments of the German Bight • PFOS in marine sediment may present a risk for benthic organisms in the German Bight article info abstract Article history: Perfluoroalkyl acids (PFAAs) have been determined in the environment globally. However, studies on the occur- Received 22 October 2014 rence of PFAAs in marine sediment remain limited. In this study, 16 PFAAs are investigated in surface sediments Received in revised form 18 December 2014 from the German Bight, which provided a good overview of the spatial distribution. The concentrations of ΣPFAAs Accepted 19 December 2014 ranged from 0.056 to 7.4 ng/g dry weight. The highest concentration was found at the estuary of the River Ems, Available online xxxx which might be the result of local discharge source. Perfluorooctane sulfonic acid (PFOS) was the dominant com- Editor: Adrian Covaci pound, and the enrichment of PFOS in sediment might be strongly related to the compound structure itself.
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