Articles | Volume 25, issue 8
https://doi.org/10.5194/acp-25-4587-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-4587-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
30 Apr 2025
Research article |
| 30 Apr 2025
| 30 Apr 2025
Source apportionment and ecotoxicity of PM2.5 pollution events in a major Southern Hemisphere megacity: influence of a biofuel-impacted fleet and biomass burning
Guilherme Martins Pereira
CORRESPONDING AUTHOR
Department of Atmospheric Sciences, Institute of Astronomy, Geophysics and Atmospheric Sciences, University of São Paulo, 05508-090, São Paulo, Brazil
Department of Chemistry, Institute of Chemistry, University of São Paulo, 05508-000, São Paulo, Brazil
Leonardo Yoshiaki Kamigauti
Department of Atmospheric Sciences, Institute of Astronomy, Geophysics and Atmospheric Sciences, University of São Paulo, 05508-090, São Paulo, Brazil
Rubens Fabio Pereira
Department of Atmospheric Sciences, Institute of Astronomy, Geophysics and Atmospheric Sciences, University of São Paulo, 05508-090, São Paulo, Brazil
Djacinto Monteiro dos Santos
Department of Applied Physics, Institute of Physics, University of São Paulo, 05508-090, São Paulo, Brazil
current address: Department of Meteorology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
Thayná da Silva Santos
Department of Chemistry, Institute of Chemistry, University of São Paulo, 05508-000, São Paulo, Brazil
José Vinicius Martins
Department of Mineralogy and Geotectonics, Institute of Geosciences, University of São Paulo, 05508-080, São Paulo, Brazil
Célia Alves
Centre for Environmental and Marine Studies, Department of Environment and Planning, University of Aveiro, 3810-193 Aveiro, Portugal
Cátia Gonçalves
Centre for Environmental and Marine Studies, Department of Environment and Planning, University of Aveiro, 3810-193 Aveiro, Portugal
current address: Department of Physics, University of León, Campus de Vegazana, 24071 León, Spain
Ismael Casotti Rienda
Centre for Environmental and Marine Studies, Department of Environment and Planning, University of Aveiro, 3810-193 Aveiro, Portugal
Nora Kováts
Center of Natural Environmental Sciences, University of Pannonia, Egyetem str. 10, 8200 Veszprém, Hungary
Thiago Nogueira
Department of Environmental Health, School of Public Health, University of São Paulo, 01246-904, São Paulo, Brazil
Luciana Rizzo
Department of Applied Physics, Institute of Physics, University of São Paulo, 05508-090, São Paulo, Brazil
Paulo Artaxo
Department of Applied Physics, Institute of Physics, University of São Paulo, 05508-090, São Paulo, Brazil
Regina Maura de Miranda
School of Arts, Sciences and Humanities, University of São Paulo, 03828-000, São Paulo, Brazil
Marcia Akemi Yamasoe
Department of Atmospheric Sciences, Institute of Astronomy, Geophysics and Atmospheric Sciences, University of São Paulo, 05508-090, São Paulo, Brazil
Edmilson Dias de Freitas
Department of Atmospheric Sciences, Institute of Astronomy, Geophysics and Atmospheric Sciences, University of São Paulo, 05508-090, São Paulo, Brazil
Pérola de Castro Vasconcellos
Department of Chemistry, Institute of Chemistry, University of São Paulo, 05508-000, São Paulo, Brazil
Maria de Fatima Andrade
Department of Atmospheric Sciences, Institute of Astronomy, Geophysics and Atmospheric Sciences, University of São Paulo, 05508-090, São Paulo, Brazil
Model code and software
openair: Tools for the Analysis of Air Pollution Data David Carslaw et al. https://cran.r-project.org/web/packages/openair/index.html
Short summary
The chemical composition of fine particulate matter was studied in the megacity of São Paulo (Brazil) during a polluted period. Vehicular-related sources remain relevant; however, a high contribution of biomass burning was observed and correlated with sample ecotoxicity. Emerging biomass burning sources, such as forest fires and sugarcane-bagasse-based power plants, highlight the need for additional control measures alongside stricter rules concerning vehicular emissions.
The chemical composition of fine particulate matter was studied in the megacity of São Paulo...
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