Chemical composition of wet precipitation at metropolitan Porto Alegre, Brazil, 2005-2007

Química Nova

Teixeira, Elba Calesso¹  Migliavacca, Daniela Montanari¹  Rodriguez, Maria Teresa Raya¹  Universidade Feevale, Novo Hamburgo, Brasil¹  Universidade Federal do Rio Grande do Sul, Porto Alegre, Brasil¹ 

关键词: wet precipitation;    principal components analysis;    cluster analysis.;   

DOI  :  10.1590/S0100-40422012000600002

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

This work aims to quantify the wet precipitation the Metropolitan Area of Porto Alegre (MAPA), in southern Brazil, through the analysis of major ions (by ion chromatography) and metallic elements (ICP/AES). By principal components analysis and cluster analysis was possible to identify the influence of natural and anthropic sources in wet precipitation. The results indicated of the higher contribution to the ions NH4+, SO42- and Ca2+. Thus it was possible to identify the contribution of anthropogenic sources in wet precipitation in the study area, such as power plants, oil refineries, steel and vehicle emissions.

【 授权许可】

Unknown