RODRÍGUEZ, Susana; HERRERA, Jorge. Validation Method for Determining Levels of SO42-, NO3-, Cl- and C2O42- in Particulate Matter PM-10 in San José. Tropical Journal of Environmental Sciences, [S. l.], v. 28, n. 1, p. 56–63, 2004. DOI: 10.15359/rca.28-1.6. Disponível em: https://www.revistas.una.ac.cr/index.php/ambientales/article/view/12044.. Acesso em: 3 jul. 2024.