AMS方法在大气气溶胶来源研究中的应用

在我国自己建立的加速器质谱计（ＡＭＳ）技术的基础上,利用＾１４Ｃ的特征的生物来源示踪性能,将ＡＭＳ技术运用于我国大气气溶胶来源的研究,我们建立了大气气溶胶采样－－石墨碳制备－ＡＭＳ测定的全部样品处理过程,对北京市中关村地区、东单地区在采暖期和非采暖期的气溶胶样品和湖南南岳、山东青岛的气溶胶及这些地区的地表土进行了ＡＭＳ测定,将多元统计方法与ＡＭＳ方法相结合,从中分析这些样品中微量元素组分和含碳 分

THE APPLICATION OF ACCELERATOR MASS SPECT ROMETRY (AMS) IN THE STUDY OF SOURCE IDENTIFICATION OF AEROSOLS

?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.