Organochlorine pesticides were detected and analyzed in surface water, bottom water and porewater from Honghu Lake, middle of China. The concentrations of total HCHs in surface water and bottom water were 3.52-5.68 ng/L and 3.77-6.86 ng/L respectively, and the concentrations of total DDTs were 0.39-2.38 ng/L and 0.91-6.05 ng/L respectively. Compared with the water quality of other regions, the concentrations of OCPs in Honghu Lake were lower. The concentrations of OCPs in bottom water from Honghu Lake were higher than those in surface water, but OCPs concentrations in porewater were greatly higher than those in bottom water. It indicated that OCPs in water of Honghu Lake were mainly derived from re-suspension and release of pollutants in sediments. Among four component compounds of HCHs, γ-HCH was major contributor in water, which suggested there are still lindane to be used in this region in recent years. The predominance of DDE in total DDTs indicated that DDT had been degraded mostly to its metabolite and DDTs in water from Hongu Lake might be mainly originated from aged weathered soil residues.
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机译：在中国中部洪湖的地表水，底水和孔隙水中对有机氯农药进行了检测和分析。地表水和底水中的六氯环己烷总浓度分别为3.52-5.68 ng / L和3.77-6.86 ng / L，滴滴涕的总浓度分别为0.39-2.38 ng / L和0.91-6.05 ng / L。与其他地区的水质相比，洪湖的OCPs浓度较低。洪湖底水中的OCPs浓度高于地表水，但孔隙水中的OCPs浓度却比底水中的OCPs高得多。结果表明，洪湖水中的OCP主要来自沉积物中污染物的重悬和释放。在六氯环己烷的四种成分化合物中，γ-六氯环己烷是水的主要贡献者，这表明近年来该区域仍使用林丹。滴滴涕在全部滴滴涕中占主导地位，表明滴滴涕已主要降解为其代谢产物，洪谷湖水中滴滴涕可能主要来自老化的风化土壤残留物。
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