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安徽铜陵杨山冲尾矿库尾砂重金属元素的迁移规律

周元祥 岳书仓 周涛发

周元祥, 岳书仓, 周涛发. 安徽铜陵杨山冲尾矿库尾砂重金属元素的迁移规律[J]. 环境科学研究, 2010, 23(4): 497-503.
引用本文: 周元祥, 岳书仓, 周涛发. 安徽铜陵杨山冲尾矿库尾砂重金属元素的迁移规律[J]. 环境科学研究, 2010, 23(4): 497-503.
ZHOU Yuan-xiang, YUE Shu-cang, ZHOU Tao-fa. Migration of Heavy Metals in Yangshanchong Tailings Impoundment in Tongling,Anhui Province[J]. Research of Environmental Sciences, 2010, 23(4): 497-503.
Citation: ZHOU Yuan-xiang, YUE Shu-cang, ZHOU Tao-fa. Migration of Heavy Metals in Yangshanchong Tailings Impoundment in Tongling,Anhui Province[J]. Research of Environmental Sciences, 2010, 23(4): 497-503.

安徽铜陵杨山冲尾矿库尾砂重金属元素的迁移规律

基金项目: 安徽省自然科学基金项目(01045202);安徽省优秀青年科技基金项目(08040106907,04045063)

Migration of Heavy Metals in Yangshanchong Tailings Impoundment in Tongling,Anhui Province

  • 摘要: 安徽铜陵杨山冲尾矿库使用期为1966—1990年,堆积了近1 308×104 t尾矿,选择该尾矿库进行尾砂重金属迁移规律研究.结果表明:在自然风化条件下,Cu,As,Hg,Cd和Pb的淋滤迁移速度相对较快,Zn略慢;Zn,Pb,Hg和Cd在50~60 cm深处产生了二次富集;不同位置的尾砂中重金属迁移规律有一定差异,低洼区Zn,As和Cd等在表层形成局部富集,100 cm以内浅层尾砂中也有部分重金属元素二次富集;经过长期风化氧化和淋滤作用,浅层尾砂中的重金属元素易淋滤部分大多被淋失,风化后尾砂中Cu,Pb,As和Hg以残渣态为主要赋存形式,其含量占全量比例均大于35%,其次为铁锰氧化态,其中Zn和Cd以铁锰氧化态含量在表层最高.在尾矿库表面植草能减少扬尘,也可能造成部分重金属元素含量在表层异常升高,影响尾矿库的进一步改造和复垦.

     

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出版历程
  • 收稿日期:  2009-09-11
  • 修回日期:  2009-12-07
  • 刊出日期:  2010-04-25

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