上海市2004年冬季城市大气气溶胶含Pb单颗粒物的来源查证 |
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作者姓名: | 李晓林 包良满 刘江峰 岳伟生 李燕 张桂林 |
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作者单位: | 中国科学院上海应用物理研究所,上海 201800 |
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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中识别出七种铅污染排放源,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有铅汽油后上海市地区大气铅污染的最主要排放源。
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关 键 词: | 大气气溶胶 PM10 铅 质子微探针 模式识别 |
Source identification of single Lead-containing particles in the ambient air of Shanghai city in winter 2004 |
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Authors: | LI Xiao-Lin BAO Liang-Man LIU Jiang-Feng YUE Wei-Sheng LI Yan CHANG Gui-Lin |
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Institution: | Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 |
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Abstract: | 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. |
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Keywords: | aerosol PM10 lead proton microprobe pattern recognition |
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