Articles | Volume 16, issue 22
https://doi.org/10.5194/acp-16-14397-2016
https://doi.org/10.5194/acp-16-14397-2016
Research article
 | 
18 Nov 2016
Research article |  | 18 Nov 2016

Chemical characterization of organic particulate matter from on-road traffic in São Paulo, Brazil

Beatriz Sayuri Oyama, Maria de Fátima Andrade, Pierre Herckes, Ulrike Dusek, Thomas Röckmann, and Rupert Holzinger

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Vehicular emissions have a strong impact on air pollution in big cities; hence, the study was performed in São Paulo city, where light- (LDVs) and heavy-duty vehicles (HDVs) run on different fuels. We find that organic aerosol emission from LDVs and HDVs is a complex process involving oxidation of fuel constituents, NOx chemistry, and condensation of unburned fuel hydrocarbons on new or existing particles. The obtained emission patterns can be used to study processing of young aerosol in Brazil.
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