Comparison of Organochlorine Pesticides Occurrence, Origin, and Character in Agricultural and Industrial Soils in Beijing
Comparison of Organochlorine Pesticides Occurrence, Origin, and Character in Agricultural and Industrial Soils in Beijing
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DOI：
10.1007/s00244-009-9286-y
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发表时间：
2009-02
影响因子：
4
通讯作者：
Yajuan Shi;Yonglong Lu;Tieyu Wang;Guang Wang;W. Luo
中科院分区：
文献类型：
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作者：
Yajuan Shi;Yonglong Lu;Tieyu Wang;Guang Wang;W. Luo
通过对北京市有机氯农药（OCPs，HCHs和DDTs）生产区和农田土壤表层和剖面中有机氯农药的来源和分布特征的比较，分析了有机氯农药的生态毒理学风险，并提出了相应的管理建议。结果表明，有机氯农药的生产、储存和废弃物处理对环境的污染程度大于有机氯农药的使用。不同土地利用类型的表层土壤中六氯环己烷和滴滴涕的浓度相差几个数量级。前OCPs生产工厂表层土壤中HCHs和DDTs的浓度（ng/g干土，几何平均值）（分别为1958.2和3998.2）显著高于农业土壤。DDTs和HCHs的残留仅在农田土壤表层积累，而在有机氯农药厂和仓库中，则在0 ~ 400 cm深度积累。农业土壤中以β-HCH和p，p '-DDE为主，工业土壤中以β-HCH、γ-HCH、p，p'-DDT和p，p '-DDE为主。根据荷兰和加拿大土壤质量标准对土壤中OCPs的人体健康风险进行了评价，结果表明，OCPs生产工厂区和大量施用的农田土壤中OCPs的人体健康风险较高。研究结果表明，需要采取紧急行动，评估长期毒性，并对与OCP相关的土地使用管理进行预评估。
The origin and occurrence of organochlorine pesticides [OCPs; hexachlorocyclohexanes (HCHs) and 1,1,1-trichloro-2,2- bis(p-chlorophenyl) ethane (DDTs)] in the surface and profile of soils from former OCPs production areas were compared with those of agricultural plots in Beijing, China in order to identify their characteristics, assess the eco-toxicological risk, and provide management suggestions. The comparison indicated heavier contamination caused by the production, storage, and waste disposal than the application of OCPs. Concentrations of HCHs and DDTs in topsoils varied by several orders of magnitude among different land-use groups. The concentrations (ng/g dry soil, geometric means) of HCHs (1958.2) and DDTs (3998.2) in the topsoils of former OCPs production factories were significantly higher than those in agricultural soils. The residue of DDTs and HCHs accumulated only on the surface of agricultural soil, but at depths ranging from 0 to 400 cm for the OCPs plant and warehouse. β-HCH andp,p’-DDE dominated in the agricultural soils, whereas β-HCH, γ-HCH,p,p’-DDT, andp,p’-DDE were dominant in the industrial soils. The risk of examined OCPs in soils on human health was assessed in light of the Dutch and Canadian soil quality criteria, and the results indicated a high risk in the OCPs production factory area and the agricultural lands with large application. The results point to the need for urgent actions to evaluate long-term toxicity and preassessment for OCPs-related land-use management.