Source apportionment and ecotoxicity of PM2.5 pollution events in a major Southern Hemisphere megacity: influence of a biofuel-impacted fleet and biomass burning - Pereira, Guilherme Martins; Kamigauti, Leonardo Yoshiaki; Pereira, Rubens Fabio; Santos, Djacinto Monteiro dos; Santos, Thayná da Silva; Martins, José Vinicius; Alves, Célia; Gonçalves, Cátia; Rienda, Ismael Casotti; Kovats, Nora; Nogueira, Thiago; Rizzo, Luciana Varanda; et al. (Atmospheric Chemistry and Physics, 2025)