title: Spatial distribution and sources of polychlorinated biphenyls in surface sediments from the Zhoushan Archipelago and Xiangshan Harbor, East China Sea.
abstract: This study investigated ambient concentrations and potential sources of polychlorinated biphenyls (PCBs) in surface sediments from the Zhoushan Archipelago and adjacent Xiangshan Harbor. The ∑18PCB (total 18 PCB) concentrations ranged between 1.48 and 7.94ng/g d.w., average at 4.20ng/g d.w., presenting a low adverse environmental risk. Penta-CB was the dominant congener, contributing 46.01%-86.44% of the total PCBs. Concentrations of PCBs were highest in the northeastern part of the Zhoushan Archipelago and Xiangshan Harbor. Principal component analysis (PCA) showed that PCBs have a mixed origin; atmospheric deposition and PCB dispersion from paint flakings being the main sources of PCB pollution. Aroclor 1245 and Clophen A50 were the potential PCB sources in all sampling sites. This paper provides the first intensive survey and statistical analyses of PCB distributions and sources in the Zhoushan Archipelago and adjacent Xiangshan Harbor. This study may provide a reference to environmental protection and monitoring of PCB pollution in the East China Sea.
authors.affiliation: National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan 316004, PR China; Department of Aquatic Science, Faculty of Science, Burapha University, Chonburi 20131, Thailand.
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Wang
authors.affiliation: National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan 316004, PR China; Persistent Organic Pollutants Monitoring Laboratory, Zhoushan Center for Disease Control and Prevention, Zhoushan 316004, PR China.
authors.forename: Huanzhi
authors.initials: H
authors.lastname: Xu
authors.affiliation: National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan 316004, PR China; Marine Fisheries Research Institute of Zhejiang, Zhoushan 316004, PR China.
authors.forename: Yongdong
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan 316004, PR China. Electronic address: wucw2013@126.com.
authors.forename: Changwen
authors.initials: C
authors.lastname: Wu
authors.affiliation: Department of Aquatic Science, Faculty of Science, Burapha University, Chonburi 20131, Thailand; The Center of Excellence on Environmental Health and Toxicology, Bangkok, Thailand. Electronic address: praparsi@buu.ac.th.
authors.forename: Praparsiri
authors.initials: P
authors.lastname: Kanchanopas-Barnette
mesh_terms: D002681:China; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry*; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D014874:Water Pollutants, Chemical; C025647:clophen A50; D011078:Polychlorinated Biphenyls
keywords: East China Sea; Polychlorinated biphenyls; Sediment; Source apportionment