Liquid-Liquid Extraction-Spectrophotometric Investigations of Three Ternary Complexes of Vanadium(V)

被引：13

作者：

Gavazov, Kiril B. ^{[1
]}

Stefanova, Teodora S. ^{[1
]}

机构：

[1] Univ Plovdiv Paissii Hilendarski, Dept Gen & Inorgan Chem, Plovdiv 4000, Bulgaria

来源：

CROATICA CHEMICA ACTA | 2014年 / 87卷 / 03期

关键词：

solvent extraction; 4-(2-thiazolylazo)orcinol; tetrazolium salt; ion-association; 2:2:2 complex; ATOMIC-ABSORPTION-SPECTROMETRY; IODONITROTETRAZOLIUM CHLORIDE; ANALYTICAL-CHEMISTRY; SOLVENT-EXTRACTION; THIAZOLYLAZO DYES; 4-(2-THIAZOLYLAZO)RESORCINOL; SYSTEM; PAR; TETRAPHENYLPHOSPHONIUM; CHROMATOGRAPHY;

D O I：

10.5562/cca2436

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Complex formation and liquid-liquid extraction (LLE) were studied in systems containing vanadium(V), 5-methyl-4-(2-thiazolylazo)resorcinol (TAO), tetrazolium salt (TZS), water and chloroform. The following three TZSs were used: 3-(4,5-dimethyl-2-thiazol)-2,5-diphenyl-2H-tetrazolium bromide (MTT), 3-(2-naphtyl)-2,5-diphenyl-2H-tetrazolium chloride (Tetrazolium violet, TV), and 2-(4-iodophenyl)-3-(4-nitrophenyl)-5-phenyl-2H-tetrazolium chloride (INT). Concentration of the reagents (TAO and TZS), pH of the aqueous medium, and shaking time were subjects of optimization experiments. Formation of ternary complexes with a composition of 2:2:2 was demonstrated by a set of different methods. Some key characteristics conceming the analytical application of the studied LLE-chromogenic systems were established as well.

引用

页码：233 / 240

页数：8

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