title: Concentrations and compositions of organochlorine contaminants in sediments, soils, crustaceans, fishes and birds collected from Lake Tai, Hangzhou Bay and Shanghai city region, China.
abstract: Contamination by persistent organochlorines (OCs), such as DDTs, hexachlorocyclohexane isomers (HCHs), chlordane compounds (CHLs), hexachlorobenzene (HCB) and polychlorinated biphenyls (PCBs) were examined in sediments, soils, fishes, crustaceans, birds, and aquaculture feed from Lake Tai, Hangzhou Bay, and in the vicinity of Shanghai city in China during 2000 and 2001. OCs were detected in all samples analyzed, and DDT and its metabolites were the predominant contaminants in most sediments, soils and biota. Concentrations of p,p'-DDT and ratio of p,p'-DDT to SigmaDDTs were significantly higher in marine fishes than those in freshwater fishes. While the use of DDTs has been officially banned in China since 1983, these results indicate a recent input of technical DDTs into the marine environment around Hangzhou Bay. Comparison of organochlorine concentrations in fishes collected from Lake Tai and Hangzhou Bay suggests the presence of local sources of HCHs, chlordanes and PCBs at Lake Tai. Higher proportions of penta- and hexa-PCB congeners in fishes at Lake Tai may suggest the use of highly chlorinated PCB product, such as PCB(5), around this lake. To our knowledge, this is a first comprehensive study to examine the present status of organochlorine contamination in various environmental media, such as sediments, soils and wildlife, in China.
authors.affiliation: Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan. nakata@sci.kumamoto-u.ac.jp
authors.forename: Haruhiko
authors.initials: H
authors.lastname: Nakata
authors.forename: Yuko
authors.initials: Y
authors.lastname: Hirakawa
authors.forename: Masahiro
authors.initials: M
authors.lastname: Kawazoe
authors.forename: Tetsuji
authors.initials: T
authors.lastname: Nakabo
authors.forename: Koji
authors.initials: K
authors.lastname: Arizono
authors.forename: Shin-Ichi
authors.initials: S
authors.lastname: Abe
authors.forename: Takeshi
authors.initials: T
authors.lastname: Kitano
authors.forename: Hideaki
authors.initials: H
authors.lastname: Shimada
authors.forename: Izumi
authors.initials: I
authors.lastname: Watanabe
authors.forename: Weihua
authors.initials: W
authors.lastname: Li
authors.forename: Xucheng
authors.initials: X
authors.lastname: Ding
mesh_terms: D000818:Animals; D001717:Birds; D002681:China; D002706:Chlordan / Q000032:analysis; D003445:Crustacea / Q000737:chemistry*; D003634:DDT / Q000032:analysis; D017753:Ecosystem; D004781:Environmental Exposure / Q000009:adverse effects; D004784:Environmental Monitoring / Q000379:methods; D005399:Fishes; D005618:Fresh Water / Q000737:chemistry; D019015:Geologic Sediments / Q000032:analysis*; D001556:Hexachlorocyclohexane / Q000032:analysis; D006843:Hydrocarbons, Chlorinated / Q000032:analysis*; D011078:Polychlorinated Biphenyls / Q000032:analysis; D012623:Seawater / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D006843:Hydrocarbons, Chlorinated; D012989:Soil Pollutants; D014874:Water Pollutants, Chemical; D002706:Chlordan; D001556:Hexachlorocyclohexane; D003634:DDT; D011078:Polychlorinated Biphenyls