Abstract: STUDY ON SOURCE IDENTIFICATION FOR CARBONACEOUS AEROSOLS──THE APPLICATION OF ACCELERATOR MASS SPECTROMETRYShao Min;Li Jinlong;Tang Xiaoyan(State Joint Key Laboratory of Environmental Simulation and Pollution Control,Center of Environmental Sciences, Peking University，Beijing100871)Wang Jianjun;Guo Zhiyu;Liu Kexin;Lu Xiangyang;Li Bin;Li Kun (Institute of Heavy Ion Physics，Peking University，Beijing100871)Abstract:The study on source identification for atmospheric carbonaceous aerosols by accelerator mass spectrometry is described．For comparison，the source of trace elements in aerosols by multivariate analysis models is studied．For the samples collected in suburb of Beijing，the results by factor analysis show that the predominant TSP source was soil which contributes more than 50％to atmospheric aerosols，However，the AMS results demonstrate that carbonaceous aerosols have quite different emission sources，For carbonaceous aerosols of Beijing，Hunan and Shandong，the contribution to ambient particles from fossil fuel is nearly 70％，and as the man-made activities（such as coal-burning）increase，the fossil burning will have more contributions.Keywords: AMS Aerosol Factor analysis Source identification