煤矸石堆附近耕作层土壤中重金属污染状况与评价——以鲁西南煤炭基地为例

通过对鲁西南煤炭基地若干混堆的煤矸石山周围耕作层土壤的实际调查及分析测试资料,研究了煤矸石堆附近耕作层土壤中重金属污染状况。结果表明,土壤局部已经受到Cd、Ni的污染,但未出现多金属复合污染状况。煤矸石堆附近土壤已经受到采矿等人类活动的影响,其中Cd,Hg的人为影响最大。从8种重金属元素含量随深度的变化曲线形态来看,Hg,Cd 2种元素与Cr,Ni,Cu,Zn,Pb,As 6种元素曲线形态显示差异性,Hg,Cd元素在土壤中赋存、迁移等应具特殊性,有待进一步研究。

Pollution Investigation and Evaluation of Heavy Metals in Surface Soil Around Coal Gangue Dumps——Taking Coal Production Base in Southwestern Shandong as an Example

Based on practical investigation and test results in surface soil around (10~100m) in coalproduction base in southwestern Shandong province, pollution of heavy metals in surface soil around coal gangue dumps has been studied. It is showed that regional soil has been polluted by Cd and Ni, but no apparent combined pollution of heavy metals. Surface soil has been affected by mining and human activities. Among them, human affecting of Cd and Hg is the biggest. As showed by curve shape of 8 kinds of metallic elements which has changed with the depth, curves have differences between Hg, Cd and Cr, Ni, Cu, Zn, Pb, As. Occurrence in the soil and migration of Hg and Cd elements are particular, which should be studied furtherly.