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| 云南金顶超大型铅锌矿区尾矿中Cd的形态分析 | |
| 引用本文： | 李航,肖唐付,谭显龙,刘东,蒋子阳,郑珺,石高扬.云南金顶超大型铅锌矿区尾矿中Cd的形态分析[J].地球与环境,2009,37(2). |
| 作者姓名： | 李航 肖唐付 谭显龙 刘东 蒋子阳 郑珺 石高扬 |
| 作者单位： | 1. 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,贵阳,550002;重庆地质矿产研究院,重庆,400042 2. 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,贵阳,550002 3. 重庆地质矿产研究院,重庆,400042 4. 长江水利委员会水文局长江上游水文水资源勘测局,重庆,410014 |
| 基金项目： | 重庆市科委自然科学基金计划资助项目(2008BB7326);;科技部国家科技支撑计划项目(2006BAC09B04);;中国科学院“西部之光”项目(2006) |
| 摘 要： | 镉是人体非必须的有毒微量元素,Cd的不同化学形态,其生物有效性不同。通过改进的BCR分步提取法及ICP-MS分析研究发现:云南金顶铅锌矿矿区尾矿砂中Cd的主要形态为残渣态,其含量远远高于可氧化态、可还原态和弱酸提取态;金顶铅锌矿区老尾矿库中表层尾矿样品中弱酸提取态和可还原态Cd均高于底层尾矿样品,相比之下,表层尾矿中Cd等重金属元素易于释放到环境中,其生物有效性也强于底层尾矿,对环境的潜在危害大;老尾矿库尾矿砂中四种提取形态的Cd、Zn、Pb含量及金属总量均高于新尾矿库尾矿砂,这可能是由选厂工艺技术的差异造成的。 |
| 关 键 词： | 镉 尾矿 元素形态 金顶铅锌矿 |
Speciation Analysis of Cadmium in Tailings from the Jinding Pb-Zn Mining Area, Yunnan Province |
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| LI Hang,XIAO Tang-fu,TAN Xian-long,LIU Dong,JIANG Zi-yang,ZHENG Jun,SHI Gao-yang.Speciation Analysis of Cadmium in Tailings from the Jinding Pb-Zn Mining Area, Yunnan Province[J].Earth and Environment,2009,37(2). | |
| Authors: | LI Hang XIAO Tang-fu TAN Xian-long LIU Dong JIANG Zi-yang ZHENG Jun SHI Gao-yang |
| Institution: | 1.State Key Laboratory of Environmental Geochemistry;Institute of Geochemistry;Chinese Academy of Sciences;Guiyang 550002;China;2.Chongqing Institute of Geology and Mineral Resources;Chongqing 400042;China 3.The Upper Yangtze River Survey Bureau Of Hydrology and Water Resources;Chongqing 410014;China |
| Abstract: | Cadmium is a toxic,non-indispensable trace element for human body,and its different chemical forms show differences in bioavailability.Through modified BCR extraction and ICP-MS analysis of Cd in tailings,it is found that Cd in tailings around the mining area is concentrated mainly in residue speciation.The Cd contents of reduced speciation and extractable speciation,from weak acids in tailings from surface layers in the old tailings pond,are both higher than those from deeper layers.In comparison,Cd and ot... |
| Keywords: | cadmium toxic speciation analysis tailings Jinding Pb-Zn deposit Yunnan Province |
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