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首页> 外文期刊>Journal of Environmental Science and Health. A, Toxic/Hazardous Substances & Environmental Engineering >Organchlorinated Pesticides in Surface Sediments of Meiliang Bay in Taihu Lake, China
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Organchlorinated Pesticides in Surface Sediments of Meiliang Bay in Taihu Lake, China

机译：太湖梅梁湾表层沉积物中的有机氯农药。

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摘要

The concentration level of organochlorine pesticides (OCPs) in sediments from Taihu Lake, China was investigated to evaluate the potential ecological risk. A total of 48 surface sediment samples were collected in Taihu Lake. Meiliang Bay in Taihu Lake was selected due to its importance as a drinking water source for nearby cities. Results show that the concentrations of various pesticides in sediments were in the range of 0.1-107.3 ng/g for ΣHCH, 3.5-50.5 ng/g for endosulfan sulfate, 2.7-23.0 ng/g for endosulfan II and 0.3-59.3 ng/g for ΣDDT. Among the OCPs, HCHs and DDTs were the most dominant contamnants in the sediments. Cyclodiene compounds were also the main pesticides in Taihu lake besides HCH and DDT. Among the cyclodiene compounds, heptachlor and endosulfan sulfate prevailed in most of the sediments. Moreover, the frequencies of detection for the metabolites of PAHs were higher than those of parent compounds, depicting that the sediments have been contaminated historically. The results obtained in this study shown that there still exist a variety of OCPs residues in Taihu Lake and Meiliang Bay.
机译：研究了中国太湖沉积物中有机氯农药的浓度水平，以评估其潜在的生态风险。太湖共收集了48个地表沉积物样品。之所以选择太湖梅梁湾，是因为它是附近城市的饮用水源。结果表明，沉积物中各种农药的浓度范围为ΣHCH为0.1-107.3 ng / g，硫酸硫丹为3.5-50.5 ng / g，硫丹II为2.7-23.0 ng / g和0.3-59.3 ng / g用于ΣDDT。在OCP中，六氯环己烷和滴滴涕是沉积物中最主要的污染物。除六氯环己烷和滴滴涕外，环二烯化合物也是太湖的主要农药。在环二烯化合物中，大多数沉积物中普遍存在七氯和硫酸硫丹。此外，PAHs代谢物的检测频率高于母体化合物的检测频率，这表明沉积物已被历史性污染。研究结果表明，太湖和梅良湾仍然存在多种OCPs残留。

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