Journal
QUIMICA NOVA
Volume 36, Issue 9, Pages 1380-1387Publisher
SOC BRASILEIRA QUIMICA
DOI: 10.1590/S0100-40422013000900018
Keywords
inhalable particulate matter (PM10); particle morphology; scanning electron microscopy (SEM-EDS)
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Funding
- INCT/FAPESP [2008/57719-9]
- INCT/CNPq [573797/2008-0]
- INPE/CCST institutional resources
- MCTI-INPE/PCI-DD program [Proc. 551006/2011-0]
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In this study, the concentration and morphological characteristics of inhalable particulate material (PM10) were evaluated and associated with climatic conditions. The mean annual concentration was 11.0 mu g m(-3), varying between 0,647 mu g m(-3) and 36.8 mu g m(-3). Wind speed has a higher influence on PM10 dispersion, but direction was associated with particle source. During the wet period, wind speed is the main dispersion factor, while speed and direction both are important during the dry period. Based on the morphological characteristics, it is concluded that biogenic particles prevail during the rainy season and terrigenous particles during the dry period, depending on the wind direction and intensity.
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