关键词: 大气颗粒物, 源成分谱, 富集因子, 特征元素, 光谱分析

Abstract:

To guarantee the accuracy of results of source apportionment, the database of atmospheric particulate matter source profiles was established on the basis of inorganic chemical component analysises of major emission sources by XRF, such as from the road dust, fugitive dust, construction dust, soil dust and coal-fired boiler dust respectively of typical cities in Jilin Province. The results show that, though the concentration of elements of source profiles was different, the main elements were the main elements of the earch crust. The concentration of SiO2 was the highest in soil dust, while the smallest was in road dust. The concentration of Ca in construction dust was considerable than in the other sources. According to the enrichment factors analysis, the enrichment of Pb in road dust was highly contributed by anthropogenic sources, which was exhausted by vehicle emission. The enrichment of elements such as Pb, Zn and As in fugitive dust was higher,which indicated that fugitive dust had an obvious character of road dust and coal-fired boiler dust. Higher enriched of Ca in construction dust, and soil dust was affected mainly by natural sources. The enrichment factor(EF) values of As in coal-fired boiler dust was larger than 60,which showed it was highly influenced by human beings.

Key words: atmospheric particulate matter, source profiles, enrichment factor, characteristic elements, spectroscopic analysis