THE APPLICATION OF ACCELERATOR MASS SPECT ROMETRY (AMS) IN THE STUDY OF SOURCE IDENTIFICATION OF AEROSOLS
AMS方法在大气气溶胶来源研究中的应用

?14)C technique as the tracer of biogenic origins was applied in the source identification of aerosols in China on AMS facility. The whole process of sampling graphite target preparation and AMS measurements procedure were set up. The aerosols samples from Zhongguancun region, Dongdan, Bejing in space-heating and no-space-heating seasons and Nanyue, Hunan,Qingdao, Shandong were measured. The sources of trace elements and carbonaceous particles were analyzed by the AMS method combined with multivariate analysis models. The results show that the trace elements and carbonaceous components have similar mass percentage in aerosols, but their source differ greatly. It is essential to combine the AMS method with factor analysis models in environmental studies, and the combination will lead the raise of a new environmental branch named "microradiocarbonchemistry" , and play a role in other fields of environmental sciences.