淮北矿区土壤重金属空间分布与环境评价  

Spatial distribution and environmental assessment of heavy metals in the soil of the Huaibei mining area

作　　者：孙浩 周春财[1] 徐仲雨 王兴明 刘桂建[1] SUN Hao;ZHOU Chuncai;XU Zhongyu;WANG Xingming;LIU Guijian(School of Earth and Space Sciences,University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]中国科学技术大学地球和空间科学学院,安徽合肥230026

出　　处：《中国科学技术大学学报》2018年第7期560-566,共7页JUSTC

基　　金：国家重点研发计划青年项目(2-16YFC0201600)资助

摘　　要：以淮北矿区为研究区域,采集了311个土壤样品,测定了Cr,Ni,Cu,Zn,Pb,As的含量,研究重金属的空间分布特征,同时对土壤重金属进行环境评价.结果表明,研究区土壤中6种重金属存在一定程度富集,其中Zn元素富集程度最高.Cu,Zn和Pb元素的富集是由煤炭开采、化肥使用和交通运输等人为因素引起的,Cr和Ni元素受自然因素和人为活动共同影响,As的空间分布主要与成土母质等自然因素有关.环境评价结果显示,淮北矿区土壤重金属整体处于未污染或轻度污染状态,生态风险轻微,环境质量良好.To investigate the spatial distribution of heavy metals and environmentally evaluate heavy metals in soil,311 soil samples were taken from the Huaibei mining area,and the content of Cr,Ni,Cu,Zn,Pb,and As in these samples were measured.Results show that the six heavy metals are enriched to a certain extent in soil,with Zn being the most enriched metal element.Enrichment of Cu,Zn,and Pb is the result of human activities such as coal mining,use of chemical fertilizers,and transportation.A joint effect of natural and human activities enriched Cr and Ni.Natural factors,such as the soil parent material,play a role in the spatial distribution of As.Environment evaluation results show that the Huaibei mining area is in general slightly polluted or not polluted by heavy metals and faces only minor environmental risk.

关 键 词：淮北矿区 土壤 重金属 空间分布 环境质量 

分 类 号：X825[环境科学与工程—环境工程]