Estudo da composição de material particulado e compostos orgânicos voláteis no ar em Catalão - GO

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Universidade Federal de Goiás


The issue of pollution is not new. The burning of biomass used for heat generation already was beginning to anthropogenic processes of air pollution. The pollutants are in the atmosphere in solid, liquid and gaseous state. The set of solid and liquid particles is called particulate matter (PM), and the other form the set of gaseous pollutants. The MP covers a range of 0.1-100 microns and varies greatly in size composition, emission sources and adverse effects on health. The gaseous compounds are formed mostly of volatile organic compounds (VOCs), which are organic compounds which are gaseous at room temperature. These pollutants can be emitted by natural and anthropogenic sources, among which stand out the combustion processes and soil dust resuspension by wind action. The city of Catalão - GO has grown greatly in recent years, mainly due to the arrival of mining in the city exploring the carbonatite complexes Catalão I and Catalão II. The aim of this study was to monitor the atmospheric air in a region of the city of Catalan through the sampling and analysis of PM and VOCs. Samples MP, which occurred every six days over a period of 24 hours, were carried out for TSP, PM10 and PM2,5 in HI-VOL samplers suitable for each particle size. Gravimetric analysis indicated that the measured concentrations are in accordance with the standards set by law. The elementary MP analysis was performed by EDXRF technique and indicated that the elements present are mostly from vehicle emissions and resuspended soil dust by the wind. Sampling was performed by VOCs microextraction technique of solid phase (SPME - solid phase microextraction) twice a week for 12 hours. The analysis of the sampled VOCs was performed by gas chromatography-mass spectrometry (GC / MS - gas chromatography mass spectrometry) in which the compounds were identified by comparison with a NIST library / MS (National Institute of Standards and Technology / Mass Spectral) present in the equipment. The identification of these compounds indicated a strong influence of vehicle emissions in the composition of atmospheric air.



Poluição atmosférica, MP, COV, Air pollution, PM, VOCs


SANTOS, Rafaela Souza. Estudo da composição de material particulado e compostos orgânicos voláteis no ar em Catalão - GO. 2015. 94 f. Dissertação (Mestrado em Química) - Universidade Federal de Goiás, Catalão, 2015.