Química da atmosfera de uma região agroindustrial do sudeste do Brasil

TL;DRAbstract

This study was conducted in Araraquara city, located in an important agroindustrial region in So Paulo State. In that region, the seasonality of the sugar cane crops is responsible for a great influence on the chemical composition of the atmosphere. The rainwater compositions as well as the coarse, fine and ultrafine atmospheric particulate matter were investigated from August-September 2009 (dry and burning season) and from January-March 2010 (wet and non-burning season). Subsequently, the chemical composition of the total suspended particulate (TSP) was further studied in samples collected from July 2010 and June 2011. SEM-EDS and XRD analyses in the insoluble fraction of rainwater and particulate matter samples, respectively, revealed a number of different sort of materials such as biogenic matter and black carbon, mainly originated from sugar cane burning, as well as clay minerals, feldspars and oxides that portrait the local geology. It was possible to verify that between 46% and

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