Juan A. V. A. Barros

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This work presents an evaluation of iron and cadmium adsorption in sediment of the Furnas Hydroelectric Plant Reservatory located in Alfenas, Minas Gerais (Brazil). The metal determination was done employing a flow injection analysis (FIA) with an on-line filtering system. As detection techniques, flame atomic absorption spectrometry (FAAS) for iron and(More)
The determination of macro and micronutrients in plant tissues is an important measure used to analyze plant nutritional status and to evaluate the possible need for fertilizer supplementation. The analysis of leaves provides the most information for the deficiency or excess of nutrients in plants [3]. This procedure is often performed using spectrochemical(More)
The chemical analysis of geological materials is required for a better understanding of mineral reserves but also for geological and geochemistry studies. The determination of rare earth elements (REEs) in geological materials can provide valuable information about the geochemical formation and origin. Nowadays, REEs are critically needed for(More)
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