Sorption and preconcentration of metal ions in ethanol solution with a silica gel surface chemically modified with benzimidazole

被引：96
作者：
Dias, NL
Gushikem, Y
Polito, WL
Moreira, JC
Ehirim, EO
机构：
[1] UNICAMP, INST QUIM, BR-13081970 CAMPINAS, SP, BRAZIL
[2] USP, INST QUIM, BR-13560250 SAO CARLOS, SP, BRAZIL
[3] UNESP, INST QUIM, BR-14800 ARARAQUARA, SP, BRAZIL
[4] UNIV FED SAO CARLOS, DEPT ENGN QUIM, BR-13560905 SAO CARLOS, SP, BRAZIL
来源：
TALANTA | 1995年 / 42卷 / 11期
关键词：
benzimidazole; preconcentration of heavy metals; adsorption isotherms; silica gel functionalized;
D O I：
10.1016/0039-9140(95)01621-X
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
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.
引用
收藏
页码：1625 / 1630
页数：6
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