陕北煤矿区农田土壤重金属污染现状及修复研究

摘要

To investigate the pollution of heavy metals on farmland around mining area during coal mining,sampled the heavy metals from surrounding soil and corn seedling in Shenmu Daliuta coal mine. Determined the heavy metals content of 35 typical sampling point and blank group.The results show that,the average content of Cu,Zn,Pb,Cr,Cd,Hg,As and others heavy metals are higher than those in the blank group,the content of Zn,Cu,Pb,Cr,Hg and others heavy metals in soil have positive correlation with those in the corn seedling.That means the soil around the mining area has been contaminated and the heavy metals in soil have a direct impact on the heavy metals absorp-tion of corn seedling.Provide matched soil remediation measures.%为了研究煤炭开采过程对周边农田土壤的重金属污染影响，对神木大柳塔煤矿区周边农田土壤和玉米幼苗进行采样，测定分析35个典型采样点和空白对照的重金属含量。结果表明：煤矿区农田土壤中Cu、Zn、Pb、Cr、Cd、Hg、As等重金属平均含量均高于对照区，说明煤矿开采过程对农田带来了重金属污染。 Zn、Cu、Pb、Cr、Hg等重金属元素在土壤中的含量与玉米中的含量显示出正相关性，表明土壤中的重金属含量直接影响着植物对重金属的吸收，并有针对性地提出了土壤重金属污染的防治和修复措施，以期为矿区污染治理提供科学依据。