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Type: Artigo de periódico
Title: Sorption and preconcentration of metal ions in ethanol solution with a silica gel surface chemically modified with benzimidazole
Author: Dias, NL
Gushikem, Y
Polito, WL
Moreira, JC
Ehirim, EO
Abstract: 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.
Subject: benzimidazole
preconcentration of heavy metals
adsorption isotherms
silica gel functionalized
Country: Holanda
Editor: Elsevier Science Bv
Citation: Talanta. Elsevier Science Bv, v. 42, n. 11, n. 1625, n. 1630, 1995.
Rights: fechado
Date Issue: 1995
Appears in Collections:Unicamp - Artigos e Outros Documentos

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