期刊
ENVIRONMENTAL POLLUTION
卷 155, 期 1, 页码 150-156出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2007.10.025
关键词
organochlorine pesticides; fish tissue; DDTs; source assessment; Pearl River Delta
Fish tissues from different fishery types (freshwater farmed, seawater farmed and seawater wild) were analyzed for organochlorine pesticides (OCPs), with the aim to further our understanding of bioaccumulation, and reflect the state of different fishery environments. Significantly higher Sigma OCP levels were found in seawater farmed fish than others, and among three freshwater farmed species. the lowest levels occurred in filter-feeding fish (bighead carp). Liver contained the highest Sigma OCP levels. while no significant differences were found anion, other tissues. Among DDT components, p,p'-DDT was abundant in seawater fish, while for freshwater fish, p,p'-DDE was the predominant congeners, except for northern snakehead (34% for p,p'-DDE and 30% for p,p'-DDT). The new Source of DDTs to freshwater fish ponds was partly attributed to dicofol, whereas sewage discharged from the Pearl River Delta and anti-fouling paint were likely the DDTs sources to seawater farmed fish. (C) 2007 Elsevier Ltd. All rights reserved.
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