title: Occurrence, source diagnosis, and biological effect assessment of DDT and its metabolites in various environmental compartments of the Pearl River Delta, South China: a review.
abstract: This review summarizes and analyzes available data in the literature (mostly after 2000) on the occurrence of dichlorodiphenyltrichloroethane (DDT) and its main metabolites, dichlorodiphenyldichloroethane (DDD) and chlorodiphenyldichloroethylene (DDE), in the environment of the Pearl River Delta (PRD), South China. Generally, the concentration levels of the sum of DDT, DDD, and DDE, designated as DDTs thereafter, have not significantly declined since 1983. However, the composition of DDTs residues has changed with time. DDTs in soil, freshwater sediment and freshwater fish species were mainly residues from chronological use. There is evidence that new point sources, such as dicofol and anti-fouling paint, may have contributed DDTs to various environmental compartments. Risk assessment against existing criteria indicated that the levels of DDTs in water and some fish species may pose adverse effects to humans or wildlife, and those in sediment/soil may also cause negative impacts to the eco-environment of the PRD.
authors.affiliation: State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, P.O. Box 1131, Wushan, Guangzhou 510640, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Guo
authors.forename: Huan-Yun
authors.initials: HY
authors.lastname: Yu
authors.forename: Eddy Y
authors.initials: EY
authors.lastname: Zeng
mesh_terms: D000818:Animals; D002681:China; D003634:DDT / Q000032:analysis* / Q000633:toxicity; D003633:Dichlorodiphenyl Dichloroethylene / Q000032:analysis / Q000633:toxicity; D003632:Dichlorodiphenyldichloroethane / Q000032:analysis / Q000633:toxicity; D004010:Dicofol / Q000032:analysis / Q000633:toxicity; D004784:Environmental Monitoring / Q000379:methods; D004785:Environmental Pollutants / Q000032:analysis* / Q000633:toxicity; D005506:Food Contamination; D019015:Geologic Sediments / Q000737:chemistry; D006801:Humans; D045483:Rivers; D012989:Soil Pollutants / Q000032:analysis / Q000633:toxicity; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000633:toxicity
chemical_list: D004785:Environmental Pollutants; D012989:Soil Pollutants; D014874:Water Pollutants, Chemical; D003633:Dichlorodiphenyl Dichloroethylene; D003634:DDT; D003632:Dichlorodiphenyldichloroethane; D004010:Dicofol