Sorption and preconcentration of metal ions in ethanol solution with a silica gel surface chemically modified with benzimidazole
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Data
1995-11-01
Autores
Dias, N. L.
Gushikem, Y.
Polito, W. L.
Moreira, J. C.
Ehirim, E. O.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Resumo
The adsorption isotherms of MCl(2) (M = Mn, Ni, Cu, Zn and Cd) and FeCl3 by silica gel chemically modified with benzimidazole molecules (= SI(CH2)(3)-NC7H5N) were studied in ethanol solution at 298 K. A column made of modified silica was used to adsorb and preconcentrate the above metal ions from ethanol solution. Elution was done with 0.1 M hydrochloric acid in an ethanol/water mixture having a mole fraction of water of 0.8. The material was applied in the preconcentration of metal ions from commercial ethanol normally used as engine fuel.
Descrição
Palavras-chave
benzimidazole, preconcentration of heavy metals, adsorption isotherms, silica gel functionalized
Como citar
Talanta. Amsterdam: Elsevier B.V., v. 42, n. 11, p. 1625-1630, 1995.