期刊
ENVIRONMENTAL MONITORING AND ASSESSMENT
卷 150, 期 1-4, 页码 405-416出版社
SPRINGER
DOI: 10.1007/s10661-008-0239-0
关键词
Scanning electron microscope; Energy dispersive X-ray; Size fraction; Aerosols; Metals; Delhi
Scanning electron microscopy-energy dispersive X-ray analysis (SEM-EDX) was used to understand the differences in morphology, elemental composition and particle density of aerosols in different five size ranges to further investigate the potential sources as well as transport of pollutants from/at a much polluted and a very clean area of Delhi. Aerosol samples were obtained in five different size ranges viz. >==10.9, 10.9-5.4, 5.4-1.6, 1.6-0.7 and <==0.7 mu m from a considerably very clean and a much polluted area of Delhi. It was observed that at polluted area most of the particles irrespective of size are of anthropogenic origin. At clean area, in coarse size fractions particles are of natural origin while in fine size range the presence of anthropogenic particles suggests the transport of particles from one area to the other.
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