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Measurements of wet and dry deposition at an urban location in India

Rao, PSP and Khemani, LT and Momin, GA and Safai, PD and Pillai, AG (1992) Measurements of wet and dry deposition at an urban location in India. Atmospheric Environment, 26B. pp. 73-78.

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Wet and dry depositions were collected in Pune city using 24-h and weekly sampling periods, respectively, from January 1984 to December 1988. All the wet and dry deposition samples were analysed for major cations and anions along with pH. Dry depositions were minimum in the monsoon season and maximum in the winter season though there was no significant difference in pH values. The wet deposition of all ionic components was found to be higher than the dry deposition. The depositions of the ionic components from natural sources (soil and sea) were higher than those from anthropogenic sources. The dry deposition velocities of the aerosols were found to be increasing with increase of their mass median diameters. The chemical composition of the dry deposition at Pune indicated maximum depositions of the alkaline substances, which are the main cause for the alkaline pH of rain water. Results of the present study have suggested that the atmospheric composition in the city is strongly influenced by natural sources rather than anthropogenic.

Item Type: Article
Additional Information: Copyright of this article belongs to Elsevier
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 21 Apr 2016 09:24
Last Modified: 21 Apr 2016 09:24

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