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Disentangling vehicular emission impact on urban air pollution using ethanol as a tracer (2018)

  • Authors:
  • USP affiliated authors: NETTO, PAULO EDUARDO ARTAXO - IF
  • Unidades: IF
  • DOI: 10.1038/s41598-018-29138-7
  • Subjects: FÍSICA ATMOSFÉRICA; AEROSSOL; POLUIÇÃO AMBIENTAL; ETANOL
  • Agências de fomento:
  • Language: Inglês
  • Abstract: The Sao Paulo Metropolitan Area is a unique case worldwide due to the extensive use of biofuel, particularly ethanol, by its large fleet of nearly 8 million cars. Based on source apportionment analysis of Organic Aerosols in downtown Sao Paulo, and using ethanol as tracer of passenger vehicles, we have identified primary emissions from light-duty-vehicles (LDV) and heavy-duty-vehicles (HDV), as well as secondary process component. Each of those factors mirror a relevant primary source or secondary process in this densely occupied area. Using those factors as predictors in a multiple linear regression analysis of a wide range of pollutants, we have quantified the role of primary LDV or HDV emissions, as well as atmospheric secondary processes, on air quality degradation. Results show a significant contribution of HDV emissions, despite contributing only about 5% of vehicles number in the region. The latter is responsible, for example, of 40% and 47% of benzene and black carbon atmospheric concentration, respectively. This work describes an innovative use of biofuel as a tracer of passenger vehicle emissions, allowing to better understand the role of vehicular sources on air quality degradation in one of most populated megacities worldwide.
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  • Informações sobre o DOI: 10.1038/s41598-018-29138-7 (Fonte: oaDOI API)
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    • ABNT

      BRITO, Joel; CARBONE, Samara; SANTOS, Djacindo A Monteiro dos; et al. Disentangling vehicular emission impact on urban air pollution using ethanol as a tracer. Nature: Scientific Reports, London, Macmillan Magazines, v. 2018, n. 10679, p. 1-8, 2018. DOI: 10.1038/s41598-018-29138-7.
    • APA

      Brito, J., Carbone, S., Santos, D. A. M. dos, Dominutti, P. A., Alves, N. de O., Rizzo, L. V., & Artaxo Netto, P. E. (2018). Disentangling vehicular emission impact on urban air pollution using ethanol as a tracer. Nature: Scientific Reports, 2018( 10679), 1-8. doi:10.1038/s41598-018-29138-7
    • NLM

      Brito J, Carbone S, Santos DAM dos, Dominutti PA, Alves N de O, Rizzo LV, Artaxo Netto PE. Disentangling vehicular emission impact on urban air pollution using ethanol as a tracer. Nature: Scientific Reports. 2018 ; 2018( 10679): 1-8.
    • Vancouver

      Brito J, Carbone S, Santos DAM dos, Dominutti PA, Alves N de O, Rizzo LV, Artaxo Netto PE. Disentangling vehicular emission impact on urban air pollution using ethanol as a tracer. Nature: Scientific Reports. 2018 ; 2018( 10679): 1-8.

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