Biomass burning in the Amazon region: characterization of airborne particle-phase polycyclic aromatic hydrocarbons - Vasconcellos, Pérola de Castro; Alves, Nilmara de Oliveira; Caumo, Sofia Ellen da Silva; Artaxo Netto, Paulo Eduardo; Hacon, Sandra de Souza; Medeiros, Silvia Regina Batistuzzo de (European Aerosol Conference (EAC), 2013)