title: Inputs of antifouling paint-derived dichlorodiphenyltrichloroethanes (DDTs) to a typical mariculture zone (South China): potential impact on aquafarming environment.
abstract: Existing evidence indicated that dichlorodiphenyltrichloroethane (DDT)-containing antifouling paints were an important source of DDT residues to mariculture zones. However, the magnitude of the impact on aquafarming environment has remained largely unknown. In the present study, the concentrations of DDT and its metabolites (designated as DDXs) were determined in harbor sediment and antifouling paint samples collected from a typical mariculture zone in South China. Compositional and concentration correlation analyses implicated the DDT-containing antifouling paints for fishing boat maintenance as an important source of DDT in the mariculture zone. The annual emission of DDXs to the study region was estimated at 0.58 tons/yr. Furthermore, a comparison of the expected DDT loadings in pelagic fish and field measurements indicated that fish feed especially trash fish was a major source of DDTs in the fish body. Nevertheless, the use of DDT-containing antifouling paints should be limited to prevent further deterioration in aquafarming environment.
authors.affiliation: State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, PO Box 1131, Wushan, Guangzhou 510640, China.
authors.forename: Huan-Yun
authors.initials: HY
authors.lastname: Yu
authors.forename: Ru-Lang
authors.initials: RL
authors.lastname: Shen
authors.forename: Yan
authors.initials: Y
authors.lastname: Liang
authors.forename: Hefa
authors.initials: H
authors.lastname: Cheng
authors.forename: Eddy Y
authors.initials: EY
authors.lastname: Zeng
mesh_terms: D000821:Animal Feed / Q000032:analysis; D000818:Animals; D057219:Biofouling / Q000517:prevention & control*; D002681:China; D003632:Dichlorodiphenyldichloroethane / Q000032:analysis* / Q000378:metabolism; D004784:Environmental Monitoring; D005398:Fisheries; D005399:Fishes / Q000378:metabolism*; D019015:Geologic Sediments / Q000032:analysis*; D010150:Paint / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000378:metabolism; D014877:Water Pollution, Chemical / Q000032:analysis*
chemical_list: D014874:Water Pollutants, Chemical; D003632:Dichlorodiphenyldichloroethane