万庄金矿田土壤重金属的垂直分布及形态研究

被引:19
作者
张爱星 [1 ,2 ]
聂义宁 [1 ,2 ]
季宏兵 [1 ,2 ,3 ]
冯金国 [4 ]
秦飞 [1 ,2 ]
机构
[1] 北京科技大学土木与环境工程学院
[2] 北京科技大学国家环境与能源国际科技合作基地
[3] 首都师范大学资源环境与旅游学院首都圈生态环境过程重点实验室
[4] 北京市地质工程设计研究院
关键词
土壤; 重金属; 垂直分布; 形态分析; 地累积指数;
D O I
暂无
中图分类号
X53 [土壤污染及其防治];
学科分类号
083001 [环境科学];
摘要
利用等离子体发射光谱法、原子荧光光谱法等研究了北京水源涵养区上游万庄金矿田4个土壤剖面样品中的Cu、Zn、Ni、Pb、Cd、Cr、Hg和As共8种重金属元素在剖面上的分布特征,以及Cu、Zn、Pb、Cd、Cr、Ni元素的形态分布特征,并对重金属元素污染现状进行了评价。结果表明部分重金属元素在土壤表层有明显的富集现象,Cd、As、Pb、Zn、Cu、Hg 6种重金属基本都随深度的增加,含量大体呈现逐渐减小的趋势,Cr、Ni有较相似的迁移和富集规律;相关性分析发现Zn、Ni、Cd、Cr、和As的相关性显著可能具有同源性。形态分析可知重金属Zn、Cd的迁移能力相对较高。地累积指数评价结果可见,土壤中Pb、As、Cd环境生态污染较严重。
引用
收藏
页码:1 / 8
页数:8
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