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上海市大气气溶胶中铅污染的研究
A Study of Pb Contamination in Atmospheric Aerosol of Shanghai
【作者】 张桂林; 谈明光; 李晓林; 张元勋; 岳伟生; 陈建敏; 王荫淞; 李爱国; 李燕; 张元茂; 山祖慈;
【Author】 Guilin Zhang;Mingguang Tan;Xiaolin Li;Yuanxun Zhang;Weisheng Yue;Jianmin Chen;Yinsong Wang;Aiguo Li;Yan Li;Yuanmao Zhang;Zuci Shan;Shanghai Institute of Nuclear Research,The Chinese Academy of Sciences;Shanghai Environment Monitoring Center;
【机构】 中国科学院上海应用物理研究所; 上海市环境监测中心;
【摘要】 本文介绍了用质子激发X荧光分析(PIXE)、质子微探针、电感耦合等离子质谱(ICP-MS)和扩展X-射线吸收精细结构谱(EXAFS)等分析手段研究上海市大气气溶胶PM10中铅的浓度、化学种态和铅的源解析。研究发现2002年冬天和2003年上海地区大气气溶胶PM10中铅的平均浓度分别为369ng/m3和237ng/m3,铅的化学种态主要是PbCl2、PbSO4和PbO,燃煤烟尘、钢铁烟尘和汽车尾气是主要排放源,它们对气溶胶中铅的贡献率分别为50%、35%和15%。
【Abstract】 PIXE,μ-PIXE,ICP-MS and EXAFS were used to study the concentration,the chemical species and the source assignment of Pb in the atmospheric aerosol particles PM10.Mean values of 369 ng/m3 and 237 ng/m3 of Pb concentration were obtained from 19 monitor sits in Shanghai in the winter of 2002 and 2003.It was found that PbCl2、PbSO4 and PbO were mainly formed in air.Based on the lead isotope ratios and mass balance the calculation show the main contribution of Pb to air are from iron and steel,coal combustors and automobile exahaust gases,their relative contributions are 50%,35% and 15%,respectively.
【Key words】 Atmospheric aerosol; Pb; ICP-MS; EXAFS;
- 【会议录名称】 第十一届全国大气环境学术会议论文集
- 【会议名称】第十一届全国大气环境学术会议
- 【会议时间】2004-10-23
- 【会议地点】中国山东济南
- 【分类号】X513
- 【主办单位】中国环境科学学会大气环境分会