Characterization of PM10 and PM2.5 and size distribution of chloride, nitrate and sulphate in urban and rural atmospheres of Londrina

Química Nova

Universidade Estadual de Londrina, Londrina, Brasil¹  Freitas, Adriana de Marques¹  Solci, Maria Cristina¹ 

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

DOI  :  10.1590/S0100-40422009000700013

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 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 SO42- 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】

Unknown