| 云南兰坪金顶铅锌矿区土壤中Pb分布特征 |
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| 引用本文：李瑞萍,王安建,曹殿华,耿诺,高兰,邹为雷,赵以辛,修群业.2009.云南兰坪金顶铅锌矿区土壤中Pb分布特征[J].地球学报,30(1):72-78. |
| DOI：10.3975/cagsb.2009.01.10 |
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| 基金项目:中国地质调查局地质调查项目(编号：200010000004)，国家“973”项目(编号：2002CB412607)和国家科技支撑计划(编号：2006BAB01A07) |
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| 中文摘要:采用连续提取法测定兰坪金顶铅锌矿区土壤中Pb的形态含量，通过地统计方法分析污染物的空间分布、化学形态变化特征，结果表明金顶矿区土壤中Pb大范围严重超标，按照国家土壤环境质量标准(Ⅲ级)，Pb的中位值超标1.77倍，平均值超标约19倍。插值分布图显示Pb的污染及形态分布受矿体空间展布、地形变化、矿业活动、地表径流等的影响，其中水溶态Pb受植被和水系影响更大。土壤中Pb形态含量依次为残渣态>碳酸盐态>活性铁锰态>有机结合态>离子交换态>水溶态，环境有效态(水溶态、离子交换态与碳酸盐态之和)含量比较高，对兰坪矿区及沘江流域具有潜在的巨大危害 |
| 中文关键词:铅锌矿 重金属 形态分析 分布特征 兰坪金顶 |
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| Distribution of Pb in Soils of the Jinding Pb-Zn Deposit，Lanping，Yunnan Province |
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| Abstract:The speciation of Pb in soils of the Jinding Pb-Zn deposit was analyzed by sequential extraction procedure, and the distribution and speciation variability of Pb were studied by geostatistics. The results show that most soils in Jinding area are contaminated by Pb. According to the soil environmental quality standard(ClassⅢ), the median content of Pb is 1.77 times higher, while the mean content is 19 times higher. Distribution of Pb shows that the pollutants are influenced by the distribution of the deposit, the terrain variation, the mining activity, and the rivers, and that the water-soluble faction of Pb is especially affected by the distribution of plants and rivers. The general trend of Pb in soils is residual>carbonate>Fe-Mn oxide>organic>exchangeable>water-soluble. As the available fraction of Pb is rather high in Lanping area, there exists considerable Potential danger in Lanping area and Beijiang river valley. |
| keywords:Pb-Zn deposits heavy metals speciation analysis distribution characteristics Jinding in Lanping |
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