焦作市朱村矿蔬菜及土壤中重金属污染分析

Contents of Four Heavy Metals in Five Vegetables and Soils Around Zhucun Coal Mine in Jiaozuo City,Henan Province

通过对焦作市朱村矿区矸石山周围种植的大白菜、菠菜、胡萝卜、白萝卜及蒜苗5种蔬菜和相应土壤中Cu、Cr、Pb、Zn的含量及其污染状况进行的分析表明,该矿区土壤不同程度地受到这4种重金属的污染,平均含量依次为Zn>Cr>Cu>Pb;测试的5种蔬菜,对各元素吸收量表现为Zn>Cu>Pb>Cr;蔬菜中Pb、Zn积累较Cu、Cr高,供试点中大部分蔬菜Pb、Zn含量超出了国家规定的蔬菜卫生标准,部分蔬菜中Cr也存在超标现象。

Contents of four heavy metals i. e Cu, Cr, Pb, Zn, in five kinds of vegetables and their soils around the Zhucun coal mine of Jiaozuo city were analyzed. The vegetables studied included celery cabbages, spinach, carrots, radish and garlic. The result indicated that the heavy metals Cu, Cr, Pb, Zn in these vegetables could be detected , and these five kinds of vegetables had same absorbing ability towards the metals with an order of Zn 〉 Cu 〉 Pb 〉 Cr. Generally, Pb, Zn in the vegetables were higher than Cu, Cr, while the contents of Pb, Zn in most vegetables collected from the studied area exceeded the Vegetable Sanitation Standard, but Cr just in some vegetables was also above the standard.