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

[1] SYNTHETIC ANALYTICAL STUDIES ON ORGANIC-REAGENTS FOR BIOMATERIALS
AKIYAMA, S
[J]. ANALYTICAL SCIENCES, 1994, 10 (03) : 365 - 373
[2] CONCENTRATION, SEPARATION AND DETERMINATION OF SCANDIUM, ZIRCONIUM, HAFNIUM AND THORIUM WITH A SILICA-BASED SULFONIC-ACID CATION-EXCHANGER
ALIMARIN, IP
FADEEVA, VI
KUDRYAVTSEV, GV
LOSKUTOVA, IM
TIKHOMIROVA, TI
[J]. TALANTA, 1987, 34 (01) : 103 - 110
[3] BRUNING IMR, 1980, RES DEV CTR PETROBRA, P15
[4] de Andrade Bruning I. M. R., 1982, B TEC PETROBRAS, V25, P217
[5] DIAS NL, 1994, J CHEM SOC DALTON, P1493
[6] ESR STUDY OF THE COMPLEX-FORMATION BETWEEN CU(CLO4)2 AND A FUNCTIONALIZED SILICA-GEL SURFACE
DIAS, NL
GUSHIKEM, Y
MOREIRA, JC
POLITO, WL
RODRIGUES, E
[J]. JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY, 1994, 5 (01) : 53 - 57
[7] ESR STUDY OF CUCL2 ADSORBED ON A CHEMICALLY-MODIFIED SILICA-GEL SURFACE WITH BENZIMIDAZOLE MOLECULE
DIAS, NL
GUSHIKEM, Y
[J]. THEOCHEM-JOURNAL OF MOLECULAR STRUCTURE, 1995, 335 : 175 - 180
[8] FILHO NLD, IN PRESS TALANTA
[9] ADSORPTION OF METAL-IONS FROM ETHANOL ON AN IMINOSALICYL-MODIFIED SILICA-GEL
KUBOTA, LT
MOREIRA, JC
GUSHIKEM, Y
[J]. ANALYST, 1989, 114 (11) : 1385 - 1388
[10] LEYDEN DE, 1981, ANAL CHEM, V53, P1059, DOI 10.1021/ac00232a731

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