襄樊市郊土壤有机氯农药的地球化学变化  

The Geochemical Change of Organochlorine Pesticides in Soil on the Suburbs of Xiangfan

作　　者：游远航 祁士华[2] 罗洪 

机构地区：[1]广东省地质调查院,广东广州510080 [2]中国地质大学环境学院,湖北武汉430074 [3]湖北省鄂西北地质矿产调查所,湖北襄樊441003

出　　处：《现代地质》2008年第6期975-979,共5页Geoscience

基　　金：国土资源部中国地质调查局;广东省人民政府多目标生态农业地球化学调查合作项目(1212010511216)

摘　　要：采用水平剖面、垂直剖面现场采样及室内测试方法，分析了襄樊市郊代表性经济作物基地HCH和DDT的土壤地球化学变化。结果表明，在垂直方向上，α-HCH／γ-HCH、DDE／DDD比值在土壤20cm处有明显的分界线；随土壤深度增加，HCHs总量逐渐降低。在水平方向上，同点表层土壤（0～5cm）的α-HCH／γ-HCH比值大于下层土壤（5-20cm）的比值或者相差不大。Using the horizontal section, the vertical section sampling and the indoor testing methods, geochemical change of HCH and DDT in soils, the representative industrial crop base on the suburbs of Xiangfan, has been analyzed. The results indicate that, in the vertical direction, the ratios of α-HCH to γ-HCH, DDD in the 20 cm place have the obvious boundary. Increasing along with the depths of soil, the sum isomer HCHs reduces gradually. In the horizontal direction, either the ratio of α-HCH to γ-HCH of the soil （0 -5 cm）is higher than that of the deep soil（5 -20 cm） or they have the same ratios.

关 键 词：土壤 有机氯农药 地球化学 襄樊 

分 类 号：P595[天文地球—地球化学] X142[天文地球—地质学]