SORPTION AND PRECONCENTRATION OF METAL-IONS IN ETHANOL SOLUTION WITH A SILICA-GEL SURFACE CHEMICALLY-MODIFIED WITH BENZIMIDAZOLE

Authors
DIAS NL GUSHIKEM Y POLITO WL MOREIRA JC EHIRIM EO
Citation
Nl. Dias et al., SORPTION AND PRECONCENTRATION OF METAL-IONS IN ETHANOL SOLUTION WITH A SILICA-GEL SURFACE CHEMICALLY-MODIFIED WITH BENZIMIDAZOLE, Talanta, 42(11), 1995, pp. 1625-1630
Citations number
16
Journal title
Talanta
ISSN journal
00399140 → ACNP
Volume
42
Issue
11
Year of publication
1995
Pages
1625 - 1630
Database
ISI
SICI code
0039-9140(1995)42:11<1625:SAPOMI>2.0.ZU;2-5
Abstract
The adsorption isotherms of MCl(2) (M = Mn, Ni, Cu, Zn and Cd) and FeC l3 by silica gel chemically modified with benzimidazole molecules (= S I(CH2)(3)-NC7H5N) were studied in ethanol solution at 298 K. A column made of modified silica was used to adsorb and preconcentrate the abov e metal ions from ethanol solution. Elution was done with 0.1 M hydroc hloric acid in an ethanol/water mixture having a mole fraction of wate r of 0.8. The material was applied in the preconcentration of metal io ns from commercial ethanol normally used as engine fuel.