Voltar
Artigo Acesso aberto Produção Nacional Revisado por pares
BIBTEX RIS

Influência da mineralogia dos sedimentos das bacias hidrográficas dos rios Mogi-Guaçu e Pardo na composição química das águas de abastecimento público

2003; Brazilian Chemical Society; Volume: 26; Issue: 1 Linguagem: Inglês

10.1590/s0100-40422003000100004

ISSN

1678-7064

Autores

Marcos José de Lima Lemes, Paulo Miranda Figueiredo Filho, Maria Aparecida Faustino Pires,

Tópico(s)

Geochemistry and Geologic Mapping

Resumo

This work studied bottom sediment from catchment area of 13 stations of water treatment of Mogi-Guaçu and Pardo river basins, through identification of mineralogical matrix and its correlation with potential bioavailable metal concentrations.The main clay minerals present were kaolinite and illite.The values of iron and manganese grades were derived from reddish-purple soil, which is rich of such elements.They had higher values on areas with weak vegetation cover compared with other areas linked with more vegetation density.Higher values of calcium at Campestrinho station (IG 69) were associated to occurrence by weathering of calcium feldspars markedly present on regional porphiritic acid rocks.The concentrations of phosphorous are characteristically high on areas near urbanized regions.

Referência(s)