Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/25816
Title: Chemical composition of atmospheric aerosols at New Delhi
Authors: Gadi, Ranu
Sarkar, A K
Gera, B S
Mitra, A P
Parashar, D C
Issue Date: Apr-2002
Publisher: NISCAIR-CSIR, India
Abstract: Size differentiated measurements of atmospheric aerosols have been done at New Delhi using Anderson sampler. Suspended particulate matter (average 363 μg/m3) is found to have a bimodal distribution with a major part of the aerosols in the fine mode which affects human health. Analysis of F, Cl, NO3, SO4, Na, K, Ca, Mg and NH4 shows that cations are, in general, dominating the anions. The ions NO3, Ca, Mg and Na have bimodal distribution, whereas the other ions are found to have unimodal distribution. Major fraction of Na, Ca and Mg is in the coarse mode showing their soil derived nature, while K, NH4, F, Cl, SO4 and NO3 are predominant in the fine modes due to the anthropogenic activities around the site. High K in the fine mode may be due to dense vegetation around the site and biomass burning in the nearby village.
Page(s): 93-97
URI: http://hdl.handle.net/123456789/25816
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.31(2) [April 2002]

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