title: [Concentrations and distribution of organochlorine pesticides in the surface sediments of Jiaozhou Bay, Taozi Bay and Sishili Bay].
abstract: Forty-eight surface sediment samples collected from Jiaozhou Bay, Taozi Bay and Sishili Bay were analyzed for organochlorine pesticides (OCPs) by Gas Chromatography. Results showed that average concentrations of HCHs, HCB and DDTs in marine sediments were 0.33, 0.31 and 10.33 ng x g(-1) in Jiaozhou Bay and 0.26, 0.10 and 4.56 ng x g(-1) in Taozi Bay and Sishili Bay, respectively. Contamination status of OCPs was relatively higher in Jiaozhou Bay than in other inland coastal regions, especially for the levels of DDTs; however, OCPs concentrations were relatively low in Taozi Bay and Sishili Bay. The source of HCHs could be mainly attributed to the heavy historical application in agricultural areas and late transport to coastal region through surface runoff or riverine discharge, and DDTs were primarily originated from the use of technical DDTs. Fresh input of lindane and dicofol-type DDTs were found in several sites, such as Qingdao Port. High concentrations of DDTs in Jiaozhou Bay should arouse much attention.
authors.affiliation: Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China. ykliu@yic.ac.cn
authors.forename: Yi-Kai
authors.initials: YK
authors.lastname: Liu
authors.forename: Guang-Cai
authors.initials: GC
authors.lastname: Zhong
authors.forename: Jian-Hui
authors.initials: JH
authors.lastname: Tang
authors.forename: Xiao-Hui
authors.initials: XH
authors.lastname: Pan
authors.forename: Chong-Guo
authors.initials: CG
authors.lastname: Tian
authors.forename: Ying-Jun
authors.initials: YJ
authors.lastname: Chen
mesh_terms: D061006:Bays; D002681:China; D003634:DDT / Q000032:analysis; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry*; D006843:Hydrocarbons, Chlorinated / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D006843:Hydrocarbons, Chlorinated; D010573:Pesticide Residues; D014874:Water Pollutants, Chemical; D003634:DDT