期刊名称：African Journal of Environmental Science and Technology
电子版ISSN：1996-0786
出版年度：2009
卷号：3
期号：12
页码：422-428
DOI：10.5897/AJEST08.188
语种：English
出版社：Academic Journals
摘要：Aerosols are mixture of solid and liquid particles and have considerable variation in terms of their chemical composition and size. In this study the elemental composition of aerosol particles in the atmosphere of a city, Gaborone, was carried out. The elemental analysis was done by environmental scanning electron microscope (ESEM). The results clearly show that the composition of the particles observed was very complex. It also showed the presence of elements Al, Si, Fe, K, Ca, Mg, Zn, Na, Cu, Pb, Ti, Ni, Pt, Au and Cr. The most frequently occurred element was silicon and the least frequently occurred element was platinum. Our measurements also revealed that the elements which had an amount more than 90% were copper, lead, nickel and gold.
