用质子X荧光法对广州市气溶胶中无机元素的分析

The Analysis of Inorganic Elements in the Aerosol of Guanzhou City by PIXE

用8级撞击式采样器在广州市五个代表点采集了大气气溶胶样品,用质子激发X荧光分析(PIXE)法进行了分析。取得了近20种元素的质量浓度及其粒径分布。分别计算了元素中粗粒子和细粒子的富集因子,对元素的产生源及广州市大气气溶胶的特征进行了讨论。文章最后,将广州市中心大气气溶胶中15种元素含量的分析测试结果与我国其它城市大气气溶胶中的元素含量进行了比较和讨论。

Using eight-stage impact collector, we collected aerosol sample of five representative points in Guangzhou City, and analysed them using the method of Proton induced X-Ray emission (PIXE). Firstly, we got the mass density and the particle diameter distribution of about 20 kinds of element. Secondly, we got the element aboundant factor of coarse and fine particles respectively;then gave some suppositions of element source and discussed the speciality of Guangzhou aerosol. At last, we discussed and compared the results of analysis of the content of 15 kinds of element of the aeresol in Guangzhou City center with those of other cities in our country.