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https://doi.org/10.5562/cca2436

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

Kiril B. Gavazov orcid id orcid.org/0000-0002-1360-8977 ; Department of General and Inorganic Chemistry, University of Plovdiv “Paissii Hilendarski”, 4000, Plovdiv, Bulgaria
Teodora S. Stefanova ; Department of General and Inorganic Chemistry, University of Plovdiv “Paissii Hilendarski”, 4000, Plovdiv, Bulgaria


Puni tekst: engleski pdf 2.753 Kb

str. 233-240

preuzimanja: 915

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Sažetak

Complex formation and liquid-liquid extraction (LLE) were studied in systems containing vanadi-um(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 experi-ments. Formation of ternary complexes with a composition of 2:2:2 was demonstrated by a set of dif-ferent methods. Some key characteristics concerning the analytical application of the studied LLE-chromogenic systems were established as well.

Ključne riječi

solvent extraction, 4-(2-thiazolylazo)orcinol, tetrazolium salt, ion-association, 2:2:2 complex

Hrčak ID:

130516

URI

https://hrcak.srce.hr/130516

Posjeta: 1.376 *