Perfluoroalkyl and polyfluoroalkyl substances in sediments from South Bohai coastal watersheds, China

MARINE POLLUTION BULLETIN

卷:85

Article; Proceedings Paper

Zhu, Zhaoyun^1,2  Wang, Tieyu¹  Wang, Pei^1,2  Lu, Yonglong¹  Giesy, John P.^3,4 

[1] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

[3] Univ Saskatchewan, Dept Vet Biomed Sci, Saskatoon, SK, Canada

[4] Univ Saskatchewan, Toxicol Ctr, Saskatoon, SK, Canada

关键词: PFAS;    Sediment;    Partitioning;    Hazard assessment;    South Bohai;   

DOI  :  10.1016/j.marpolbul.2013.12.042

来源: Elsevier

【 摘 要 】

This study investigated the concentrations and distribution of Perfluoroalkyl and polyfluoroalkyl substances (PFAS) in sediments of 12 rivers from South Bohai coastal watersheds. The highest concentrations of Sigma PFAS (31.920 ng g(-1) dw) and PFOA (29.021 ng g(-1) dw) were found in sediments from the Xiaoqing River, which was indicative of local point sources in this region. As for other rivers, concentrations of Sigma PFAS ranged from 0.218 to 1.583 ng g(-1) dw were found in the coastal sediments and from 0.167 to 1.953 ng g(-1) dw in the riverine sediments. Predominant PFAS from coastal and riverine areas were PFOA and PFBS, with percentages of 30% and 35%, respectively. Partitioning analysis showed the concentrations of PFNA, PFDA and PFHxS were significantly correlated with organic carbon. The results of a preliminary environmental hazard assessment showed that PFOS posed the highest hazard in the Mi River, while PFOA posed a relative higher hazard in the Xiaoqing River. (C) 2013 Elsevier Ltd. All rights reserved.

【 授权许可】

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