Background concentrations and adsorption of selenium in tropical soils
| Autor: | Mariana Bassetto Gabos |
|---|---|
| Přispěvatelé: | Luis Reynaldo Ferracciú Alleoni, Marcos Yassuo Kamogawa, Milton Ferreira de Moraes, Adriana Marlene Moreno Pires, Jussara Borges Regitano |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Biblioteca Digital de Teses e Dissertações da USP Universidade de São Paulo (USP) instacron:USP |
| DOI: | 10.11606/t.11.2012.tde-20092012-164703 |
| Popis: | Selenium (Se) is a trace element essential to the nutrition of animals. On the other hand, in a narrow concentration range, Se can cause toxicity. The presence of Se in food is related to the concentration of the element in soil. Thus, the knowledge of the Se amount and its behavior in soil are very important to the better manage the environment and to prevent toxicological problems and human deficiency. The objectives of this study were: (i) to quantify the natural content of Se in some Brazilian soils and correlates them with soil attributes; (ii) to evaluate the adsorption of selenite and selenate as a function of pH and Se concentration in tropical soils; (iii) to adjust the constant capacitance model to describe the Se adsorption in tropical soil as compared to empiric models. Se concentrations ranged from |
| Databáze: | OpenAIRE |
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