| 陕西潼关金矿区太峪河底泥重金属元素的含量及污染评价 |
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| 引用本文： | 徐友宁,张江华.陕西潼关金矿区太峪河底泥重金属元素的含量及污染评价[J].地质通报,2008,27(8):1263-1671. |
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| 作者姓名： | 徐友宁 张江华 |
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| 作者单位： | 中国地质调查局西安地质调查中心,陕西,西安,710054 |
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| 基金项目： | 中国地质调查局地质调查项目，中国地质调查局地质调查项目，中国地质调查局地质调查项目 |
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| 摘 要： | 通过对潼关金矿区太峪河和太峪水库底泥中重金属元素总量的调查，探讨了金矿开发活动中重金属元素对河流底泥的污染程度。研究结果表明，除As外，河流底泥中重金属元素的含量与尾矿渣中重金属元素的含量变化一致，表明其主要来源于尾矿渣，但又明显高于尾矿渣。在同一地点河流底泥中重金属元素的含量平均高出河水中的1048.61～666030.08倍，呈显著富集。以邻近地区不受工矿活动影响的河流底泥重金属元素的含量均值作为评价参比值，太峪河底泥受到了Hg、Pb、Cd、Cu、Zn元素的极度污染，单项污染超标倍数及综合污染指数法评价结果表明，Hg、Pb、Cd平均污染超标倍数达366.90、217.42和149.97，是底泥中最主要的污染元素。河流底泥重金属元素的综合污染指数高达278.97，表明河流的复合污染亦呈极度状态。太峪河底泥受重金属元素极度污染的现实提示，矿区的环境防治工作已刻不容缓。
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| 关 键 词： | 河流底泥 重金属 污染评价 潼关金矿区 太峪河 |
Contents of heavy metals in bottom sediments of the Taiyu River in the Tongguan gold mining area, Xiao Qinling Mountains, and contamination assessments |
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| XU You-ning,ZHANG Jiang-hua.Contents of heavy metals in bottom sediments of the Taiyu River in the Tongguan gold mining area, Xiao Qinling Mountains, and contamination assessments[J].Geologcal Bulletin OF China,2008,27(8):1263-1671. |
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| Authors: | XU You-ning ZHANG Jiang-hua |
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| Abstract: | The authors investigated the total heavy metal content in bottom sediments of the Taiyu River and Taiyu reservoir in the Tongguan gold mining area and studied the contamination level of the river bottom sediments due to gold exploitation. Except for As, the change of heavy metals contents in the river bottom sediments is the same as those in tailings, which indicates that: the heavy metals in the bottom sediments of the river mainly came from the tailings but their contents are higher than those in tailings. The average contents of heavy metals in bottom sediments are 1,048.61-666,030.08 times those in river water at the same site. Take the reference values of average heavy metal contents in river bottom sediments free from the influence of industrial and mining operations in the vicinity, the bottom sediments of the Taiyu River were extremely contaminated with Hg, Pb, Cd, Cu and Zn. The average times of Hg, Pb and Cd in excess of the reference values reach 366.90, 217.42 and 49.97, suggesting that Hg, Pb and Cd are main contamination elements in river bottom sediments. The comprehensive contamination index of heavy metals in river bottom sediments is 278.97, which shows that the river has been extremely contaminated. The fact that the Taiyu River has been extremely contaminated by heavy metals wants suggests that the environmental protection and control of the mining area allow no delay.. |
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