title: Occurrence of perfluorinated alkyl substances in sediment from estuarine and coastal areas of the East China Sea.
abstract: Perfluorinated alkyl substances (PFAS) have drawn much attention due to their environmental persistence, ubiquitous existence, and bioaccumulation potential. The occurrence and spatial variation of PFAS were investigated through collection of riverine and marine sediments from estuarine and coastal areas of the East China Sea. Among them, perfluorooctanesulfonic acid (PFOS), perfluoroheptanoic acid (PFHpA), and perfluorooctanoic acid (PFOA) were the three predominant PFAS with the highest detection frequencies in the sediment. PFOS up to 32.4 ng g(-1) dw and ∑PFAS up to 34.8 ng g(-1) dw were detected. Compared to other studies, high levels of PFOS were found in sediments from the East China Sea. PFHpA was also detected at higher frequency and concentration than those of other studies, which suggests point sources in this area. Concentrations of PFAS in riverine sediments were much higher than in marine sediments. Analysis of spatial variations presented overall decreasing trends of PFAS from inshore to offshore areas.
authors.affiliation: State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, 200092, Shanghai, China.
authors.forename: Hong
authors.initials: H
authors.lastname: Yan
authors.forename: Chaojie
authors.initials: C
authors.lastname: Zhang
authors.forename: Qi
authors.initials: Q
authors.lastname: Zhou
authors.forename: Shouye
authors.initials: S
authors.lastname: Yang
mesh_terms: D002681:China; D004784:Environmental Monitoring / Q000379:methods*; D063366:Estuaries; D005466:Fluorocarbons / Q000737:chemistry*; D019015:Geologic Sediments / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D005466:Fluorocarbons; D014874:Water Pollutants, Chemical
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