农业环境科学学报2012，Vol.31Issue(1)：85-91,7.
大冶矿区周边农田土壤和油菜重金属污染特征研究
Investigation on the Heavy Metal Contamination of Farmland Soil and Brassica Campestris Nearby Mining Areas in Dave City, China
摘要
Abstract
Many mining enterprises are distributed in Daye City because of the abundant mineral resources. With the development of industrialization, the environments nearby these enterprises were destroyed severely. Investigation was conducted to evaluate the heavy metal contamination of farmland soil and Brassica campestris plant around typical copper mining areas in Daye City. The results showed that the soils were contaminated with different heavy metals compared with soil natural background values of Hubei Province, and among them cadmium (Cd) was mostly contaminated, followed by copper(Cu) as second severely contaminated element. While using China National Standard (CNS) as an evaluation standard, the soils were contaminated with heavy metals except for Zn, Cr and Pb. Nemorow integrative index method was further employed to evaluate the heavy metal contamination level, and the result showed that all the tested soils were severely contaminated based on both soil natural background values and CNS as evaluation standard, with soil sample No. 2 as an exception, which was subjected to the moderate pollution level. The heavy metal concentrations varied in different parts of Brassica campestris, with a character of leaf>grain ≈ root for Cu, Pb, Zn, Cd, and Co, and seed>leaf>root for Mn. The concentrations of Cd, Pb, Cu and Zn in Brassica campestris were all exceeded the national food sanitation standard, and the exceed level for Cd and Pb were higher than Cu and Zn. The order of the enrichment coefficients was Mn>Zn>Cd>Ni>Cu>Pb>Co.关键词
矿区/农田土壤/重金属/油菜Key words
mining area/farmland soil/heavy metal/brassica campestris分类
资源环境引用本文复制引用
孙清斌,尹春芹,邓金锋,熊巧..大冶矿区周边农田土壤和油菜重金属污染特征研究[J].农业环境科学学报,2012,31(1):85-91,7.基金项目
湖北省教育厅科学技术研究计划优秀中青年人才项目(Q20093001) （Q20093001）
湖北省教育厅科学技术研究计划指导性项目(B类)(B20093003) （B类）
黄石理工学院院级引进人才项目(10yjz04R) （10yjz04R）
