This study started with the inventory of the main particulate emission sources of Sete Lagoas city, Minas Gerais, Brazil. Based on this data and on local meteorological and topographic parameters, the selection of the highest points of inhalable particulate (PM10) concentrations was carried out using the ISC3 model. One of the identified points is situated on the central area of the city. Several samples of particulate matter (PM) were collected in that site for the determination of the mineralogical and elemental composition of the aerosol particles (PM10). Calcite was the most abundant mineral (> 30%), and Na, Ba and Fe were the trace elements presented in larger proportion in the collected material. The analysis of the main factors showed that resuspension of soil dust and industrial sources were the largest contributors of PM emissions in that area.
air quality; particulate matter; receptor model
