焦作温县怀山药土壤重金属污染分析

Analysis on heavy metal pollution of soil and Rhizome Dioscorea in Wenxian,Jiaozuo

对焦作温县土壤及怀山药中重金属质量分数特征进行分析调查,并进行了污染评价.结果表明,土壤及怀山药均受到了不同程度的重金属污染,土壤中主要污染因子为Zn,Pb;怀山药主要重金属污染因子为Cu,Zn,其次为Pb,Cr,怀山药样品中Cu全部超标,部分样品中Zn,Pb,Cr超标.

The Character of heavy metals contents in the soil and Rhizome Dioscorea are analyzed and their pollutions are evaluated. The results indicate that the soil and Rhizome Dioseorea in this area are polluted deeply by heavy metals. The main polluting factors of the soil are Zn and Pb. Generally, the main polluting factor of the Dioseorea opposita Thunb with an order of Cu, Zn, Pb and Cr. The contents of Cu in all Rhizome Dioscorea samples collected from the studied area exceeded the Vegetable Sanitation Standard, and Zn, Pb and Cr in some part is above the standard.