Particulate matter fingerprints in biofuel impacted tunnels in South America's largest metropolitan area

Guilherme Martins Pereira, Thiago Nogueira, Leonardo Yoshiaki Kamigauti, Djacinto Monteiro dos Santos, Emerson Queiroz Mota do Nascimento, José Vinícius Martins, Ana Vicente, Paulo Artaxo, Célia Alves, Pérola de Castro Vasconcellos, María de Fátima Andrade