title: Characteristics of DDTs in fish from Lake Taihu: an indicator of continual DDTs input in China.
abstract: Four typical freshwater fish species in Lake Taihu (TH), China, were collected and analyzed for the residue levels of DDT and its metabolites DDD and DDE (sum of o,p'- and p,p'-DDT, DDD, and DDE is designated as DDTs). The DDTs concentrations ranged from 3.24 to 37.1 ng/g, and p,p'-DDE was the dominant isomer, followed by p,p'-DDD and o,p'-DDT. Source identification indicated that DDTs in TH was mostly stemmed from the historical usage of technical DDT mixture, but a new source of DDT, i.e., dicofol-type DDT, also occurred. The results from the present work, together with previously published data, clearly indicate that dicofol-type DDT was widespread and was an important continual source of DDTs in China.
authors.affiliation: State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China.
authors.forename: Jian-Yang
authors.initials: JY
authors.lastname: Guo
authors.forename: Feng-Chang
authors.initials: FC
authors.lastname: Wu
authors.forename: Liang
authors.initials: L
authors.lastname: Zhang
authors.forename: Hai-Qing
authors.initials: HQ
authors.lastname: Liao
authors.forename: Zhi
authors.initials: Z
authors.lastname: Tang
authors.forename: Cao
authors.initials: C
authors.lastname: Zheng
authors.forename: Shuai
authors.initials: S
authors.lastname: Zhang
mesh_terms: D000818:Animals; D002681:China; D003634:DDT / Q000032:analysis* / Q000378:metabolism; D004010:Dicofol / Q000032:analysis; D004784:Environmental Monitoring; D005399:Fishes; D007306:Insecticides / Q000032:analysis; D060106:Lakes / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D007306:Insecticides; D014874:Water Pollutants, Chemical; D003634:DDT; D004010:Dicofol