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- W2183647107 abstract "The Formoso river is one of the main tributaries of The Sao Francisco river, northern State of Minas Gerais. Considering the natural features and anthropogenic features, the study assessed the concentration and distribution of heavy metals: Al, Mn, Fe, Cu, Cd, Cr, Ni, Pb and Zn along the longitudinal profile of the river, correlating their presence to the natural and anthropogenic interference, inferring on the environmental risks of heavy metals and on the restrictions of use. 44 water samples were collected during dry and rainy seasons to determine physical- chemical parameters in situ and chemical parameters in laboratory. Sediment samples in a total of 22 were collected, for analysis of parameters Cu, Cd, Cr, Ni, Pb, Zn, using chemical technique of acid partial extraction, and metal reading by ICP-OES. The characterization of mineral was made by X-ray, and the chemical analysis (major and minor elements) of rock types was performed by ICP-OES. The cartographic elaboration used GIS-SPRING to obtain the natural scenery. The concentration of Cd, Cr, Cu, Zn, Ni and Pb in the water compartment are mainly derived from anthropogenic interference and natural contributions of geological nature. The clay fraction in sediments is retaining high concentrations of Cd and Cr. The morphological characteristics of the fluvial channel and the hydrodynamics of the basin acted as an important mechanism for the distribution and transport of metals to sediments. Although various parameters analyzed lie within the standards, it is important to monitor these points, as they vary rapidly, in time and space." @default.
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- W2183647107 date "2012-01-01" @default.
- W2183647107 modified "2023-09-27" @default.
- W2183647107 title "Natural and Anthropogenig Contributions to Concentration and Distribution of Heavy Metals in Surface Water and in Stream Sediments in the Formoso River, Buritizeiro Municipality - Minas Gerais State, Brazil Contribuições Naturais e Antropogênicas para a Concentração e Distribuição de Metais Pesados na Água Superficial e em Sedimentos de Corrente no Rio do Formoso, Município de Buritizeiro - Minas Gerais, Brasil" @default.
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