Determinação de Mn, Cu e Zn em matrizes salinas após separação e pré-concentração usando Amberlite XAD-7 impregnada com Vermelho de Alizarina S
| Autor: | Santos Júnior Aníbal de Freitas, Korn Maria das Graças Andrade, Jaeger Helena Valli, Silva Nívia Maria Silveira, Costa Antonio Celso Spínola |
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| Jazyk: | English<br />Spanish; Castilian<br />Portuguese |
| Rok vydání: | 2002 |
| Předmět: | |
| Zdroj: | Química Nova, Vol 25, Iss 6b, Pp 1086-1090 (2002) |
| Druh dokumentu: | article |
| ISSN: | 0100-4042 1678-7064 |
| Popis: | The aim of this work was to explore the possibility of the application of a non-ionic resin obtained by impregnation of Alizarin Red S (VAS) in Amberlite XAD-7 for manganese, copper and zinc separation and preconcentration in saline matrices. For these system, the metals were quantitatively retained, in the pH range 8.5-10.0, by using 0.50 g of solid phase, stirring time of five minutes and a total mass up to 200 mug of each cation. The sorbed elements were subsequently eluted and a fifty-fold, ten-fold and ten-fold preconcentration factor for to Zn, Cu and Mn were obtained, respectively. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
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