乐安江河滩表层土中重金属的分布和残留分析

被引:11
作者
曾凡萍 [1 ,2 ]
肖化云 [1 ,3 ]
周文斌 [1 ]
机构
[1] 南昌大学环境科学与工程学院教育部鄱阳湖湖泊生态与生物资源利用实验室
[2] 江西萍乡市环境监测站
[3] 中国科学院地球化学研究所环境地球化学国家重点实验室
关键词
河滩表层土; 重金属; 采矿污染; 乐安江;
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
流经亚洲最大露天铜矿(德兴铜矿)的乐安江,其三条支流被由采矿行为而产生的酸性矿山废水AMD和一个活性炭厂排出的废液所污染,以至其河滩表层土中有高浓度的Cd、Cu、Pb、Zn。根据中国土壤环境质量标准判断,乐安江河滩表层土有4个地方被Cu所污染,3个地方被Pb和Zn所污染。而对于Cd、Cr、Ni来讲,所有采样点的浓度都比较低。4个高浓度金属离子的采样点表层土表明了它们受到了人为活动的污染。计算出的污染指数也表明受到污染的表层土呈局部分布,与4个污染源(德兴铜矿、银山铅锌矿、火力发电站和捕鱼区、金属高炉)的位置相对应。尽管4个污染源中的后面两个被清理有十几年了,但历史遗留下来的污染物仍残留在表层土中。
引用
收藏
页码:96 / 101
页数:6
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