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Indexed by:Journal Papers

Date of Publication:2015-12-30

Journal:MARINE POLLUTION BULLETIN

Included Journals:SCIE、EI、PubMed

Volume:101

Issue:2

Page Number:965-971

ISSN No.:0025-326X

Key Words:PFASs; Level; Spatial distribution; Mass loading

Abstract:Eighteen different perfluoroalkyl substances (PFASs) were investigated in 35 river water samples and 34 sediment samples collected from rivers in the Liaodong Bay basin containing two fluorine industry parks. Perfluorooctanoate (PFOA) and perfluorooctane sulfonate (PFOS) were the predominant PFASs in freshwater, with median concentrations of 26.5 ng/L and 1.87 ng/L, respectively. However, perfluorobutane sulfonate (PFBS) had the highest maximum concentration (up to 124.1 ng/L, approximately two orders of magnitude higher) in water at a site which is the nearest to the industrial source of PFASs. Total PFASs in water at this site were also the highest. In contrast, PFOA and perfluorooctadecanoate (PFOcDA) were the most abundant PFASs in sediment, with median concentrations of 1.19 ng/g and 035 ng/g, respectively. Total PFAS concentrations in sediment from the site near to the industrial park were significantly higher than the other rivers. Mass loading of total PFASs from the rivers flowing into Liaodong Bay was estimated to be 506 kg/year. (C) 2015 Elsevier Ltd. All rights reserved.