Open Access Digital Repository of Ministry of Earth Sciences, Government of India

Influence of alkaline particulates on pH of cloud and rain water in India

Khemani, LT and Momin, GA and Naik, MS and Rao, PSP and Safai, PD and Murty, ASR (1987) Influence of alkaline particulates on pH of cloud and rain water in India. Atmospheric Environment, 21 (5). pp. 1137-1145.

Full text not available from this repository. (Request a copy)


Cloud and rain water samples were collected on board aircraft by specially designed equipment, during three monsoon seasons, 1983, 1984 and 1985 in the Pune region in India. The samples were analyzed for major ionic components and pH, and the concentrations of all the ionic components were found to be significantly higher (35–161%) in cloud water than in rain water. In cloud water Cl contributed most (35%) to the total ionic concentration followed by Ca(21%) and Na(17%). Sulphate and nitrate concentrations, on the average, were low and were found to account for only 6% of the total ionic concentration. pH of cloud water and rain water was substantially higher than that of the CO2-equilibrated value (5.6). The findings suggest that influence of anthropogenic sources is negligible and that of soil dust which is alkaline is substantial on the pH and chemistry of cloud/rain water in India.

Item Type: Article
Additional Information: Copyright of this article belongs to Elsevier
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 25 Feb 2016 06:08
Last Modified: 25 Feb 2016 06:08

Actions (login required)

View Item View Item