Source identification of individual PM_(2.5) particles in Shanghai air in the winter of 2007 with synchrotron X-ray fluorescence microprobe  

作　　者：李晓林 A.Iida 刘江峰 包良满 李燕 张桂林 

机构地区：[1]Shanghai Institute of Applied Physics, Chinese Academy of Sciences [2]Photon Factory, High Energy Accelerator Research Organization

出　　处：《Chinese Physics C》2009年第11期960-964,共5页中国物理C（英文版）

基　　金：Supported by Knowledge Innovation Project of Chinese Academy of Sciences (KJCX3.SYW.N3) ;National Natural Science Foundation of China (10775172, 10675159);performance under approval of Photon Factory (PF) Program Advisory Committee(Proposal No.2007G502)

摘　　要：In order to further understand the sources of PM2.5 in Shanghai air, the synchrotron X-ray fluores- cence microprobe at the BL-4A Beamline of Photon Factory of High Energy Accelerator Research Organization, Japan, was applied to analyze the individual PM2.5 particles collected from Shanghai air in the winter of 2007. Eight categories of emission sources were recognized in these individual particles. The source identification shows that most of the analyzed PM2.5 particles are derived from vehicle exhaust and metallurgical emissions. This suggests that the important emission sources of PM2.5 in Shanghai air would be vehicle exhaust and metallurgical activities.In order to further understand the sources of PM2.5 in Shanghai air, the synchrotron X-ray fluores- cence microprobe at the BL-4A Beamline of Photon Factory of High Energy Accelerator Research Organization, Japan, was applied to analyze the individual PM2.5 particles collected from Shanghai air in the winter of 2007. Eight categories of emission sources were recognized in these individual particles. The source identification shows that most of the analyzed PM2.5 particles are derived from vehicle exhaust and metallurgical emissions. This suggests that the important emission sources of PM2.5 in Shanghai air would be vehicle exhaust and metallurgical activities.

关 键 词：synchrotron X-ray fluorescence microprobe PM2.5 individual particle analysis 

分 类 号：X831[环境科学与工程—环境工程]