Mineral influence on chemical composition of drinking water supply from Mogi-Guaçu and Pardo rivers

Quimica nova

Pires, Maria Aparecida Faustino¹  Lemes, Marcos José de Lima¹  Figueiredo Filho, Paulo Miranda¹ 

[1] Instituto de Pesquisas Energéticas e Nucleares, São Paulo

关键词: sediment;    X-ray diffraction (XRD);    X-ray fluorescence(XRF);    metal.;   

DOI  :  10.1590/S0100-40422003000100004

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

This work studied bottom sediment from catchment area of 13 stationsof water treatment of Mogi-Guaçu and Pardo river basins, through identificationof mineralogical matrix and its correlation with potential bioavailable metalconcentrations. The main clay minerals present were kaolinite and illite. Thevalues of iron and manganese grades were derived from reddish-purple soil, whichis rich of such elements. They had higher values on areas with weak vegetationcover compared with other areas linked with more vegetation density. Highervalues of calcium at Campestrinho station (IG 69) were associated to occurrenceby weathering of calcium feldspars markedly present on regional porphiriticacid rocks. The concentrations of phosphorous are characteristically high onareas near urbanized regions.

【 授权许可】

CC BY