Trace elements in atmospheric particulate matter from an agro-industrial region in southeastern Brazil

Quimica nova

Cardoso, Arnaldo Alves¹  Figueiredo, Bernardino Ribeiro²  Oliveira, Patrícia Lopes de²  Angélica, Rômulo Simões³ 

[1] Universidade Estadual Paulista, Araraquara, Brasil;Universidade Estadual de Campinas, Campinas, Brasil;Universidade Federal do Pará, Belém, Brasil

关键词: trace elements;    atmospheric particulate matter;    biomass burning.;   

DOI  :  10.1590/S0100-40422013000400009

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

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.

【 授权许可】

CC BY