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| Levels and Sources of Organochlorine Pesticides in Tissues/Organs of Free-range Chickens and Ducks in Shanghai |
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| KeyWord:organochlorine pesticides, free-range chickens and ducks, tissues, organs, Dianshan Lake, Jinshan Second Industry Zone |
| Author Name | Affiliation | | CHANG Hong | Key Laboratory of Yangtze River Water Environment（Ministry of Education）, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China | | XU Meng | Key Laboratory of Yangtze River Water Environment（Ministry of Education）, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China | | QIU Yan-ling | Key Laboratory of Yangtze River Water Environment（Ministry of Education）, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China | | ZHOU Yi-hui | State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China | | ZHU Zhi-liang | Key Laboratory of Yangtze River Water Environment（Ministry of Education）, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China | | ZHAO Jian-fu | State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: |
| Organochlorine pesticides（OCPs） can enter human body through food chain. In this study, we investigated concentrations of OCPs in the tissues/organs of free-range chickens and ducks from Dianshan Lake area and the vicinity of Jinshan Second Industry Zone in Shanghai. The composition and sources of these OCPs were also explored. The concerned 21 compounds of OCPs were detected in various samples with different levels. Dichlorodiphenyltrichloroethane（DDT） and its congeners, four isomers of hexachlorocyclohexanes（HCHs）, hexachlorobenzene（HCB） and pentachloroanisol（PCA） were detected in all samples, with tissue concentrations of 1.1~28, 0.51~2.9, 0.18~3.5 and 0.010~0.35 ng·g-1 wet weight, respectively. DDTs were the most dominant OCP residues, with 4,4′-DDE being the major congener for most samples but 2,4′-DDT primary congener for ducks from Jinshan Second Industry Zone, likely due to dicofol pollution in the aquatic environment where the ducks lived. The major isomers of HCHs in tissues/organs of chickens and ducks were quite different from different areas. β-HCH was predominant isomer in the samples from Dianshan Lake, with similar lower proportions of α-HCH and γ-HCH, whereas α-HCH, β-HCH and γ-HCH had similar concentrations in the samples from Jinshan Second Industry Zone. This might imply that HCHs residues probably came from the usage of lindane in Jinshan Second Industry Zone. The rest compounds of organochlorine pesticides were much lower and showed little differences among different tissues/organs. |
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