冕宁安宁河沉积物重金属元素形态垂向分布特征  

The Distribution Characteristic of Heavy Metal Speciation in Vertical of Sediments in Aning River,Mianning

作　　者：廖超[1] 魏菲[1] 石建凡 

机构地区：[1]成都理工大学地球科学学院,四川成都610059

出　　处：《广东微量元素科学》2015年第9期22-25,共4页Trace Elements Science

摘　　要：研究了冕宁安宁河流域垂向剖面上Cd、Pb两种重金属元素不同赋存形态,采用BCR(3级4步)提取法分析了重金属的赋存形态,探讨了两种重金属元素的分布特征,简要分析了重金属元素的潜在危害性。研究区牦牛坪稀土矿的开采对重金属元素的分布造成了一定的影响。Cd、Pb两种重金属元素酸提取态、可还原态所占比例较大,活性较强,当环境条件发生变化时,容易释放出来对环境造成二次污染,具有潜在环境风险,应当引起重视。The paper studies two kinds of different forms of heavy metal elements Cd and Pb in mianning anning river basin.Using the BCR extraction method to analyze the speciation of heavy metals and discuss the distribution characteristics of two kinds of heavy metal elements and then make a brief analysis of the potential danger of heavy metal elements.Maoniuping REE deposit mining has a certain influence on the distribution of heavy metals.The acid extraction mode and reducible fraction mode of the two kinds of heavy metal elements Cd and Pb not only accounts for a bigger proportion but also have a strong activity.When environmental conditions change, it's easy to get released and cause secondary pollution to environment.The potential environmental risk that they bring should be taken seriously.

关 键 词：安宁河流域 赋存形态 重金属 

分 类 号：P641.69[天文地球—地质矿产勘探]