Comparing properties of natural biogenic with biomass burning particles in Amazonia - Artaxo Netto, Paulo Eduardo; Rizzo, Luciana Varanda; Brito, Joel Ferreira de; Barbosa, Henrique de Melo Jorge; Sena, Elisa Thomé; Cirino, Glauber G; Arana, Andrea; Serrano, Ana M (Goldschmidt Conference, 2013)