| 贵州万山汞矿区污染土壤中汞的形态分布特征 |
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| 引用本文： | 包正铎,王建旭,冯新斌,商立海.贵州万山汞矿区污染土壤中汞的形态分布特征[J].生态学杂志,2011,30(5):907. |
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| 作者姓名： | 包正铎 王建旭 冯新斌 商立海 |
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| 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;中国科学院研究生院,北京,100049
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 |
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| 基金项目： | 国家高技术研究发展计划项目，国家自然科学基金，广西环境工程与保护评价重点实验室研究基金 |
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| 摘 要： | 利用优化Tessier连续化学浸提法对贵州万山汞矿区污染土壤中汞的形态分布进行研究.结果表明,稻田土壤中汞主要以残渣态形式存在(79.65%),其次为有机结合态(19.97%)、氧化态(0.31%)、特殊吸附态(0.04%)和溶解态与可交换态(0.03%);除特殊吸附态外,其他各形态汞含量均随距污染源距离增加而降低,特殊吸附态汞在分析土壤中含量变化不明显;生物可利用性(溶解态与可交换态和特殊吸附态)汞占总汞比例较低,但在污染土壤中其含量明显高于未受污染地区.
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| 关 键 词： | 汞矿区 土壤 化学形态 生物有效性 |
Distribution of mercury speciation in polluted soils of Wanshan mercury mining area in Guizhou |
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| BAO Zheng-duo,WANG Jian-xu,FENG Xin-bin,SHANG Li-hai.Distribution of mercury speciation in polluted soils of Wanshan mercury mining area in Guizhou[J].Chinese Journal of Ecology,2011,30(5):907. |
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| Authors: | BAO Zheng-duo WANG Jian-xu FENG Xin-bin SHANG Li-hai |
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| Institution: | BAO Zheng-duo1,2,WANG Jian-xu1,FENG Xin-bin1,SHANG Li-hai1 (1State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002,China,2Graduate University of Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | The optimized Tessier sequential extraction procedure(SEP) method was used to analyze the speciation and bioavailability of mercury(Hg) in pollution soils of Wanshan mercury mining area,Guizhou Province.The results indicated that the concentration of Hg in rice paddies was dominated by residual fraction(79.65%),followed by organic bound fraction(19.97%),oxide bound fraction(0.31%),specifically sorbed fraction(0.04%) and exchangeable fraction(0.03%).The content of mercury species in soil samples were found t... |
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| Keywords: | mercury mining area soil chemical speciation bioavailability |
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