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

页码：1625 / 1630

页数：6

共 16 条

[11] IMMOBILIZATION OF 5-METHYLENE-2-(2'-THIAZOLYLAZO)-ANISOLE ON SILICA AND ITS APPLICATION IN PRECONCENTRATION OF PALLADIUM [J].