上海2004年冬季城市大气气溶胶含Pb单颗粒物的来源查证  

Source identification of single lead-containing particles in the ambient air of Shanghai city in winter 2004

作　　者：李晓林[1] 包良满[1] 刘江峰[1] 岳伟生[1] 李燕[1] 张桂林[1] 

机构地区：[1]中国科学院上海应用物理研究所,上海201800

出　　处：《中国科学院研究生院学报》2007年第5期688-691,共4页Journal of the Graduate School of the Chinese Academy of Sciences

基　　金：国家自然科学基金重大项目(10490182);中国科学院创新工程重要方向项目(KJCX3.SYW.N3)资助

摘　　要：采用质子微探针技术,分析单个大气气溶胶颗粒物.将微束质子激发X射线分析(Micro-PIXE)同计算机模式识别技术结合,查证上海市2004年冬季城市大气气溶胶PM10中含Pb单颗粒物的来源.结果在上海大气气溶胶PM10中识别出7种铅污染排放源,它们分别是:汽车尾气,钢铁工业排尘,燃煤烟尘,土壤扬尘,柴油车尾气,助动车尾气和水泥尘.其中,钢铁工业排尘和燃煤排尘是禁止使用加铅汽油后上海市地区大气铅污染的最主要排放源.Single aerosol particles in Shanghai air in winter 2004 were analyzed by proton microprobe. The micro- PIXE coupled with a pattern recognition technique was applied to identify the sources of single lead-containing particles. Seven source types were identified. They were automobile exhaust, metallurgical industry, coal combustion, soil dust, diesel exhaust, motorcycle exhaust and cement dust. The lead pollution in Shanghai air was derived mainly from the metallurgical industry and coal combustion after phasing out leaded gasoline in 1997.

关 键 词：大气气溶胶 PM10 铅 质子微探针 模式识别 

分 类 号：X131.1[环境科学与工程—环境科学]