|
|||||
|
|
| 德兴铜矿低品位矿石堆浸场与大坞河流域土壤重金属元素形态的环境特征 | |
| 引用本文： | 初娜,赵元艺,张光弟,张勤,蔡剑辉,熊群尧,李德先,王金生,赵金艳.德兴铜矿低品位矿石堆浸场与大坞河流域土壤重金属元素形态的环境特征[J].地质学报,2007,81(5):670-683. |
| 作者姓名： | 初娜 赵元艺 张光弟 张勤 蔡剑辉 熊群尧 李德先 王金生 赵金艳 |
| 作者单位： | 1. 中国地质科学院矿产资源研究所,北京,100037 2. 中国地质科学院地球物理地球化学研究所,河北廊坊,102849 3. 北京师范大学水科学研究院,100875 |
| 基金项目： | 国土资源部专项项目“矿产资源开发对环境的影响及整治示范研究”之子项目“矿床地质环境模型及环境评价”(编号30302408-2)，国土资源部百人计划项目资助成果 |
| 摘 要： | 本文主要采用连续提取法对德兴铜矿地区低品位矿石堆浸场和大坞河流域的土壤样品进行元素形态分析。低品位矿石堆浸场中As、Cu元素含量最高分别达到95.7μg/g和1867μg/g,都严重超过国家三级土壤标准,但是通过元素形态分析得到,As元素主要以硫化物态存在(百分比为50%-80%),Cu元素主要以有机结合态存在(百分比为50%-60%),能稳定存在于矿石中。其他元素如Cd、Mo、Pb、Zn都以有机物结合态为主,Cr元素以硅酸盐态为主,Hg元素以硫化物态占主要,重金属迁移性差,对环境的影响不大。大坞河流域上中下游元素形态组成变化不明显。Cu元素含量(平均为400-500μg/g)超过国家三级土壤标准,但是Cu元素主要是以有机结合态存在(比例为35%),稳定性相对较好。而Cd元素虽然在样品中含量在国家三级土壤标准之下,其水溶态、吸附态和碳酸盐态所占的比例较大(30%左右),容易发生迁移转化,对环境的影响较大。Pb元素以有机结合态为主,百分比达到45%;As、Hg元素以硫化物态占主导,百分比大于50%,对环境有潜在的影响。其他元素如Cr、Mo、Zn的硅酸盐态比例最大(50%左右),能比较稳定的存在于土壤中,对环境的影响较小。 |
| 关 键 词： | 重金属元素形态分析 土壤环境 大坞河 德兴铜矿 |
| 修稿时间： | 3/9/2006 12:00:00 AM |
Environmental Trait of Speciations of Heavy Metals in Low-Grade Ore Plot and Soil of the Dawu River Domain in the Dexing Copper Mine, Jiangxi Province |
|
| CHU N,ZHAO Yuanyi,ZHANG Guangdi,ZHANG Qin,CAI Jianhui,XIONG Qunyao,LI Dexian,WANG Jinsheng,ZHAO Jinyan ; Institute of Mineral Resources,Chinese Academy of Geological Science,Beijing,; Institute of Geophysics and Geoc.Environmental Trait of Speciations of Heavy Metals in Low-Grade Ore Plot and Soil of the Dawu River Domain in the Dexing Copper Mine, Jiangxi Province[J].Acta Geologica Sinica,2007,81(5):670-683. | |
| Authors: | CHU N ZHAO Yuanyi ZHANG Guangdi ZHANG Qin CAI Jianhui XIONG Qunyao LI Dexian WANG Jinsheng ZHAO Jinyan ; Institute of Mineral Resources Chinese Academy of Geological Science Beijing ; Institute of Geophysics and Geoc |
| Abstract: | The speciations of heavy metals in a low-grade ore plot and the Dawu River of the Dexing Copper Mine in Jiangxi Province are analyzed using a sequential extraction procedure.An analysis of heavy metal contents shows that,although the content of Cu is above the National Third Class Soil Criterion,Cu exists mainly in organic matter fraction that has good stability.While the contents of Cd is below the National Third Class Soil Criterion,hydrotrope,absorbate and carbonate fraction of Cd also take a large percent,which would easily pollute the soil.Pb mainly exists in organic matter fraction,while As and Hg exist mainly in sulphide fraction.Other heavy metals such as Cr,Mo and Zn mainly exist in the residual fraction. |
| Keywords: | speciation analysis heavy metal elements soil environment Dawu River Dexing Copper Mine Jiangxi |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《地质学报》浏览原始摘要信息 | |
| 点击此处可从《地质学报》下载免费的PDF全文 | |