Yang Huayun, Zhou Shanshan, Li Weidong, Liu Qi, Tu Yunjie
Qianjiang College of Hangzhou Normal University, Hangzhou, 310012, China.
Research Center of Environmental Sciences, College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou, 310032, China.
Bull Environ Contam Toxicol. 2015 Oct;95(4):521-4. doi: 10.1007/s00128-015-1553-1. Epub 2015 Apr 24.
Sediment samples were analyzed to comprehensively characterize the concentrations, distribution, possible sources and potential biological risk of organochlorine pesticides in Qiandao Lake, China. Concentrations of sumHCH and sumDDT in sediments ranged from 0.03 to 5.75 ng/g dry weight and not detected to 14.39 ng/g dry weight. The predominant β-HCH and the α-HCH/γ-HCH ratios indicated that the residues of HCHs were derived not only from historical technical HCH use but also from additional usage of lindane. Ratios of o,p'-DDT/p,p'-DDT and DDD/DDE suggested that both dicofol-type DDT and technical DDT applications may be present in most study areas. Additionally, based on two sediment quality guidelines, γ-HCH, o,p'-DDT and p,p'-DDT could be the main organochlorine pesticides species of ecotoxicological concern in Qiandao Lake.
对沉积物样本进行了分析，以全面表征中国千岛湖有机氯农药的浓度、分布、可能来源和潜在生物风险。沉积物中六氯环己烷总量和滴滴涕总量的浓度范围分别为0.03至5.75纳克/克干重以及未检出至14.39纳克/克干重。主要的β-六氯环己烷以及α-六氯环己烷/γ-六氯环己烷的比例表明，六氯环己烷的残留不仅源于历史上对工业用六氯环己烷的使用，还源于林丹的额外使用。o,p'-滴滴涕/p,p'-滴滴涕以及滴滴滴/滴滴伊的比例表明，大多数研究区域可能存在三氯杀螨醇型滴滴涕和工业用滴滴涕的应用。此外，根据两项沉积物质量准则，γ-六氯环己烷、o,p'-滴滴涕和p,p'-滴滴涕可能是千岛湖生态毒理学关注的主要有机氯农药种类。
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