摘要
2000年6月在北京北郊中国科学院大气物理所气象塔观测场采集了大气中细粒态气溶胶样品.用质子诱导X射线荧光分析法(PIXE)对样品进行了分析,得到Al、Si、P、S、Cl、K等19种元素的浓度及其谱分布并对当前北京市大气气溶胶的来源、化学元素成分的变化进行了研究.结果表明,这19种元素中的许多元素的浓度与过去相比有不同幅度的降低,说明北京市对大气污染的防治是有效果的.
In June 2000, atmospheric fine aerosol samples were collected in the observatory of Institute of Atomospheric Physics, Chinese Academy of Sciences in the north suburb of Beijing. The samples were analyzed with proton induced X-ray emission(PIXE) method, and concentrations of 19 chemical elements, suchas Al, Si, P, S, Cl, K etc and their distribution are obtained. The sources of atmospheric aerosols in Beijing and changes of the elemental composition far last years were studied. The results show that concentrations of many elements decrease in different degree, compared with those in the past. It shows that prevention and control of the atmospheric pollution in Beijing are effective.
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
2001年第5期432-435,共4页
China Environmental Science
