Níveis e origem da acidificação das chuvas na região do Rio Grande, RS

Mirlean, Nicolai; Vanz, Argeu; Baisch, Paulo Roberto Martins


The current article presents the first data on physical-chemical parameters of wet precipitation collected at single collection point in the city of Rio Grande, during the period of 12 months in 1997-1998. The employed technique of rainwater separation into several portions made clear the process of the atmosphere self-purification during a precipitation event. The pH of rainwater depends on the extent of industrial emissions and increases during a precipitation event. The first portion of rainwater shows an obvious neutralizing effect of soil and ocean-derived components, whose intensity depends on the duration of the preceding dry period.

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  • IO - Artigos publicados em periódicos