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| 利用铅同位素方法量化不同端元源对南京土壤和长江下游悬浮物铅富集的影响 | |
| 引用本文： | 王成,夏学齐,张义,廖启林,杨忠芳,季峻峰.利用铅同位素方法量化不同端元源对南京土壤和长江下游悬浮物铅富集的影响[J].环境科学,2014,35(11):4251-4256. |
| 作者姓名： | 王成 夏学齐 张义 廖启林 杨忠芳 季峻峰 |
| 作者单位： | 1. 南京市环境保护科学研究院，南京 210013; 南京大学地球科学与工程学院，表生地球化学教育部重点实验室，南京 210093 2. 中国地质大学 北京 地球科学与资源学院,北京,100083 3. 芜湖海螺水泥有限公司,芜湖,241213 4. 江苏省地质调查研究院,南京,210018 5. 南京大学地球科学与工程学院，表生地球化学教育部重点实验室，南京 210093 |
| 基金项目： | 南京市环境保护科技项目，国家地质实验测试中心基本科研业务费专项，国土资源部公益性行业科研专项，国家自然科学基金项目 |
| 摘 要： | 环境中铅污染及其地球化学行为关系到生态环境安全和人类健康.利用地球化学同位素方法研究长江下游典型地区土壤和河流悬浮物中铅富集特征和成因,量化不同端元源对铅富集的影响,对于环境科学发展以及铅污染治理具有重要促进意义.结果表明,南京城区表层土壤和长江下游悬浮物中的铅相对于当地背景土壤呈现出富集特征.土壤和悬浮物的铅同位素相对于自然端元具有较高的206Pb/207Pb和较低的208Pb/206Pb比值,为受到了人为铅输入影响的缘故.铅同位素地球化学端元识别模型估算表明,南京市区土壤中的铅有18%~56%(平均35%)来自人为端元源,而长江下游悬浮物样品中铅的人为端元源贡献率为22%~46%(平均32%). |
| 关 键 词： | 铅同位素 长江 南京 土壤 悬浮物 污染 |
| 收稿时间： | 2014/4/15 0:00:00 |
| 修稿时间： | 2014/6/20 0:00:00 |
Quantifying the Influence of Different Matrices on Pb Accumulation in the Soil from Nanjing and Suspended Matter from the Lower of the Yangtze River with Pb Isotopic Technique |
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| WANG Cheng,XIA Xue-qi,ZHANG Yi,LIAO Qi-lin,YANG Zhong-fang and JI Jun-feng.Quantifying the Influence of Different Matrices on Pb Accumulation in the Soil from Nanjing and Suspended Matter from the Lower of the Yangtze River with Pb Isotopic Technique[J].Chinese Journal of Environmental Science,2014,35(11):4251-4256. | |
| Authors: | WANG Cheng XIA Xue-qi ZHANG Yi LIAO Qi-lin YANG Zhong-fang and JI Jun-feng |
| Institution: | Nanjing Research Institute of Environmental Protection, Nanjing 210013, China;Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering, Nanjing University, Nanjing 210093, China;School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;Wuhu Conch Cement Co., Ltd., Wuhu 241213, China;Geological Survey of Jiangsu Province, Nanjing 210018, China;School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering, Nanjing University, Nanjing 210093, China |
| Abstract: | Lead pollution and its geochemical behavior have an influence on ecological environment and human health. It is of significance to study the characteristics and mechanism of Pb accumulation and to quantify the contributions of different environmental matrices to Pb accumulation in soils and river suspended matter in the representative fluvial delta area, such as the lower of the Yangtze River. The results showed that lead was enriched in the urban topsoil in Nanjing and the suspended matter in the lower of the Yangtze River. The urban topsoil and the river suspended matter showed higher 206Pb/207 Pb and lower 208Pb/206Pb relative to the natural matrices, and this was resulted from the influence of the anthropogenic lead. The relative contribution of separate Pb sources was assessed with the Pb geochemical model, 18%-56% (average 35%) Pb in Nanjing urban soil was derived from the anthropogenic matrices, and anthropogenic Pb contributed 22%-46% (average 32%) of total Pb in the Yangtze River suspended matter. |
| Keywords: | lead isotopes the Yangtze River Nanjing soil suspended matter contamination |
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