Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6358517 | Marine Pollution Bulletin | 2014 | 9 Pages |
Abstract
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 ΣPFAS (31.920 ng gâ1 dw) and PFOA (29.021 ng gâ1 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 ΣPFAS ranged from 0.218 to 1.583 ng gâ1 dw were found in the coastal sediments and from 0.167 to 1.953 ng gâ1 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.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Oceanography
Authors
Zhaoyun Zhu, Tieyu Wang, Pei Wang, Yonglong Lu, John P. Giesy,