| 南京栖霞山铅锌矿区铅同位素示踪 |
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| 引用本文：储彬彬,罗立强,王晓芳,刘颖,伯英.2012.南京栖霞山铅锌矿区铅同位素示踪[J].地球学报,33(2):209-215. |
| DOI：10.3975/cagsb.2012.02.09 |
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| 基金项目:国家自然科学基金项目(编号: 20775018)；国家高技术研究发展计划(863计划)项目(编号: 2007AA06Z124) |
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| 中文摘要:南京栖霞山铅锌矿已开采50余年, 环境问题日益突出。为了了解污染来源和污染传播方式, 采集了该地水、土、植物、大气沉降、燃油灰尘、矿石、人血和生物等多种样品进行重金属元素含量和铅同位素示踪分析。结果表明矿区重金属污染严重, 且污染随着靠近矿区而逐渐加重, 重金属元素Pb、As、Cd、Cu、Zn之间相关性明显, 初步反映了污染与矿山有关; 同位素分析显示, 矿区大气沉降样品、大部分植物样品、部分土壤和部分生物样品铅同位素组成与矿石铅同位素组成相似, 证实了污染源为矿山。另外, 大气沉降与植物样品铅含量高且它们的铅同位素组成相当, 反映了大气沉降是污染传播方式之一。 |
| 中文关键词:南京栖霞山 铅锌矿 铅同位素 |
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| Lead Isotopes as Tracers in the Qixiashang Lead-Zinc Mining Area, Nanjing |
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| Abstract:The Qixiashan lead-zinc mine in Nanjing has been exploited for more than 50 years, and environmental pollution has become increasingly serious. In order to investigate the source and dispersion of the pollution, the authors collected water, soil, plants, atmospheric deposition, vehicle exhaust dust, ore, human blood and biological samples and analyzed heavy metals concentrations and lead isotopes with ICP-MS. The results show that the concentrations of heavy metals in soil, plants, and atmospheric deposition are very high, and the nearer to the mining area, the heavier the pollution. In addition, Pb, As, Cd, Cu and Zn show obvious correlation. Analyses of lead isotopes show that the lead isotope compositions in atmospheric deposition, plants, and part of soils and biological samples around the mining area are similar to those in ores, indicating that the pollution source has been derived form the mine. Furthermore, atmospheric deposition and plants have high lead concentrations and similar lead isotope compositions, suggesting that lead in atmospheric deposition contributes substantially to lead transfer. |
| keywords:Qixiashan in Nanjing lead-zinc mine lead isotopes |
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