Caracterização do MP10 e MP2,5 e distribuição por tamanho de cloreto, nitrato e sulfato em atmosfera urbana e rural de Londrina

Química Nova

Adriana De Marques Freitas¹  Maria Cristina Solci¹ 

[1] ,Universidade Estadual de Londrina Centro de Ciências Exatas Departamento de QuímicaLondrina PR ,Brasil

关键词: size distribution;    particulate matter;    inorganic ions;   

DOI  :  10.1590/S0100-40422009000700013

来源: SciELO

【 摘 要 】

Samplings of atmospheric particulate matter (PM) were carried out between the months of March and April of 2007, simultaneously in two areas of Londrina, an urban (Historical Museum) and other rural (Farm School-UEL). PM was collected using the cascade impactor consisting of four impaction stages (0.25 to 10 μm). The results indicated that the fine fraction (PM2.5) represented a significant portion of the mass of PM10 (70 and 67% in the urban and rural places, respectively). Cl-, NO3- and SO4(2-) were determined by ion chromatography and the size distribution is presented. Natural and anthropogenic sources were suggested to the ionic components in the fine and coarse mode of PM.

【 授权许可】

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