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  • Title: Characteristics of DDTs in fish from Lake Taihu: an indicator of continual DDTs input in China.
    Author: Guo JY, Wu FC, Zhang L, Liao HQ, Tang Z, Zheng C, Zhang S.
    Journal: Sci Total Environ; 2012 Oct 15; 437():196-9. PubMed ID: 22940044.
    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.
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