个旧地区芦笋及其种植地土壤重金属污染评价

Heavy Metal pollution evaluation of Asparagus and the Soil around Gejiu Areas

本试验测定了个旧周边地区11个芦笋种植点的芦笋及其种植地土壤中重金属Pb、Zn、Cr、Cu的含量,并用单因子指数法和内梅罗综合污染指数法对芦笋种植地土壤重金属的污染情况进行评价。结果表明:11个采样点的芦笋样品中的Pb含量均超过国家蔬菜限量标准,Cr、Cu含量均在国家蔬菜限量标准范围内,A5和A6采样点的芦笋样品中的Zn含量超过国家蔬菜限量标准;就土壤重金属含量而言,除A3采样点土壤中的Cu含量偏高,污染指数为轻微污染外,其余采样点土壤中的Pb、Zn、Cr、Cu含量均在国家土壤背景值范围内,未受重金属污染。

The study determined the Heavy Metal content of asparagus and the planting soil around Gejiu area. It mainly determined 4 Soil Heavy Metal indices such as Pb,Zn,Cr,Cu. It analysised the pollution of Soil Heavy Metal in Single factor and nemerow index synthetic pollution index method. The result indicated that in terms of the asparagus samples heavy metal pollution, in addition to all the asparagus samples in Pb content and the A5 and A6 No. Zn content of the asparagus samples exceeded the national limit standard of vegetables, the rest were within the national limit standard. To Soil Heavy Metal, except the Cu content of sample A3 were above others and belong to light pollution, the pollution index of other samples just were between the soil background value range of our country.