title: Polychlorinated biphenyls in surface sediments of Yueqing Bay, Xiangshan Bay, and Sanmen Bay in East China Sea.
abstract: The spatial distribution and source of polychlorinated biphenyls (PCBs) in 30 surface sediments of Yueqing Bay, Xiangshan Bay, and Sanmen Bay in Eastern China were analysed. Total concentrations of PCBs ranged from 9.33 to 19.60 ng g(-1) dry weight for all the sampling stations. The observed PCB levels were lower than those in areas of high urbanisation or contamination in the bay. Low-chlorinated PCBs, dominated by tri-PCB, were identified as the prevalent contaminate of surface sediments, and the top three PCB congeners were lighter chlorinated congeners (PCB 8, PCB 18 and PCB 28). These results were in agreement with the fact that tri-PCB compounds are the dominant contaminants in China. The result of the principal component analysis revealed that all samples were similar in composition to Aroclor 1242, suggesting they might originate from electrical capacitors and transformers. The levels of PCBs were significantly correlated with the total organic carbon in the sediments.
authors.affiliation: International Joint Research Center for Persistent Toxic Substances, Zhejiang University of Technology, Hangzhou 310032, China.
authors.forename: Huayun
authors.initials: H
authors.lastname: Yang
authors.forename: Bin
authors.initials: B
authors.lastname: Xue
authors.forename: Lixia
authors.initials: L
authors.lastname: Jin
authors.forename: Shanshan
authors.initials: S
authors.lastname: Zhou
authors.forename: Weiping
authors.initials: W
authors.lastname: Liu
mesh_terms: D002681:China; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry*; D009792:Oceans and Seas; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data
chemical_list: D014874:Water Pollutants, Chemical; D011078:Polychlorinated Biphenyls