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BIBTEX RIS

Composição química das águas pluviais e deposição atmosférica anual na bacia do Alto Sorocaba (SP)

2011; Brazilian Chemical Society; Volume: 34; Issue: 4 Linguagem: Inglês

10.1590/s0100-40422011000400011

ISSN

1678-7064

Autores

Fabiano Tomazini da Conceição, Diego de Souza Sardinha, Guillermo Rafael Beltran Navarro, Maria Lúcia Pereira Antunes, Vivian Andréa Angelucci,

Tópico(s)

Groundwater and Isotope Geochemistry

Resumo

DEPOSITION AT ALTO SOROCABA BASIN (SP).Two sampling points were chosen and forty samples were collected between January and December 2006 at Alto Sorocaba basin.The rainwater pH varied from 5.46 to 6.36 (Ibiúna) and 5.26 to 6.81 (Itupararanga), being Ca 2+ the main ion responsible for controlling the rainwater pH.The ionic concentrations decreased in the following order: Ca 2 + >Na + > Mg 2+ >K + for cations and SO 4 2->HCO 3 ->NO 3 ->Cl ->PO 4 3-for anions.The annual atmospheric deposition appeared to be controlled mostly by following sources: mining activities and cement factories (Ca 2+ and HCO 3 -), natural soil dust (Na + , Mg 2+ and HCO 3 -), fossil fuel burning (SO 4 2-) and agriculture activities (K + , NO 3 -and PO 4 3-).

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