东莞市寮步镇各功能区土壤重金属含量测定与分析

Each Functional Area of Soil Heavy Metal Content Determination and Analysis of Liaobu Twon in Dongguan City

[目的]为了能给改善东莞市土壤环境提供参考依据。[方法]采用分光光度法,对寮步镇内工业区、农业区、居民区、公园区18个土壤样本中Cu、Cr、Pb的含量进行检测。通过东莞市土壤背景值下土壤受重金属污染程度、各功能区之间土壤重金属含量对比等分析,确定寮步镇不同功能区内土壤重金属的分布形态。[结果]工业区的土壤重金属污染情况尤为严重。[结论]除Cr元素外,各功能区都不同程度地受到Cu、Pb的污染,尤其是居民区和工业区的Pb与及工业区的Cu都已达到严重污染的程度。

[ Objective ] The research aimed to provide reference for the improvement of the soil environment in Dongguan. [ Method] We measured Cu, Cr and Pb content in 18 soil samples of industrial park, agricultural, residential, park district of Liaobu twon by spectrophotometric method. Compared with the soil background values of soil polluted by heavy metals in Dongguan, soil heavy metal content in each function area was contrasted. The distribution of soil heavy metal forms in different function zone in Haobu town was determined. [ Result ] Soil heavy metal pollution in industrial zone was serious. [ Conclusion] In addition to Cr element, each functional area was polluted by Cu and Pb in different de- grees, especially for Pb in residential areas and industrial zone and Cu in industrial area reached the extent of the serious pollution.