| Grant number: | 03/01194-1 |
| Support Opportunities: | Regular Research Grants |
| Start date: | July 01, 2004 |
| End date: | January 31, 2007 |
| Field of knowledge: | Physical Sciences and Mathematics - Geosciences - Meteorology |
| Principal Investigator: | Adalgiza Fornaro |
| Grantee: | Adalgiza Fornaro |
| Host Institution: | Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil |
Abstract
The present plan fits into the line of research geared to the evaluation of the chemical composition of the liquid phase of the atmosphere (rain waters and fogs). Special attention will be given to the simultaneous determination of carboxylic acids and aldehydes and their interrelationships, given that, in addition to being removed from the gaseous phase by solubilization, some studies suggest that carboxylic acids may be formed from the oxidation of aldehydes in the liquid phase. These species, in addition to direct vehicular emission, are produced by reactions of the “photochemical smog”. We will also undertake measurements of pH and conductivity and the destination of majority inorganic ions. For evaluation of the processes of removal we will take sequential samples for intra-event chemical analyses, collecting, alongside meteorological data and data on intensity of rains, information on the size of raindrops (disdrometer). It is important to highlight that studies of the chemical composition of water of fogs/mists are unprecedented for São Paulo. (AU)
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