Elementos traço em material particulado atmosférico de uma região agroindustrial do sudeste do Brasil

• Main Authors: Patrícia Lopes de Oliveira, Bernardino Ribeiro Figueiredo, Arnaldo Alves Cardoso, Rômulo Simões Angélica
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Química 2013-01-01
• Series: Química Nova
• Subjects: trace elements; atmospheric particulate matter; biomass burning
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000400009&lng=en&tlng=en

Trace element concentrations were measured in atmospheric particulate matter collected in 2009 and 2010, in a Brazilian region influenced by pre-harvest burning of sugar cane crops. For coarse particles, high concentrations of Al, Fe, K and Ca suggested that re-suspended soil dust was the main source of aerosol trace elements, subsequently confirmed by XRD analysis. High levels of K, Zn, As, Cd and Pb were found in fine particles, confirming the contribution of biomass burning and vehicle emissions, whereas Na, Al, K, Fe and Zn were the representative elements in ultrafine particles, influenced by a diversity of sources.