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2007 | 5 | 1 | 257-270
Tytuł artykułu

The solvent extraction and spectrophotometric determination of vanadium (V) with 4-(2-thiazolylazo)resorcinol and tetrazolium salts

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The formation and extraction of ion-associate complexes between the vanadium(V)-4-(2-thiazolylazo)resorcinol (TAR) anionic chelate and the cations of some mono-and ditetrazolium salts {3-(4,5-dimethyl-2-thiazol)-2,5-diphenyl-2H-tetrazolium bromide (Thiazolyl blue, MTT), 3-(2-naphtyl)-2,5-diphenyl-2H-tetrazolium chloride (Tetrazolium violet), 2-(4-iodophenyl)-3-(4-nitrophenyl)-5-phenyl-2H-tetrazolium chloride (Iodonitrotetrazolium chloride), 3,3′-[3,3′-dimetoxy(1,1′-biphenyl)-4,4′-diyl]-bis[2,5-diphenyl-2H-tetrazolium] chloride (Tetrazolium blue chloride) and 3,3′-(3,3′-dimetoxy-4,4′-biphenylene)bis[2-(4-nitrophenyl)-5-phenyl-2H-tetrazolium chloride] (Nitro blue tetrazolium chloride)} have been studied. The optimum extraction conditions have been found. The composition of the V-TAR-monotetrazolium and V-TAR-ditetrazolium complexes extracted into chloroform has been determined to be 1:2:3 and 2:4:3 respectively. The extraction, distribution and association constants, and the recovery factors have been calculated. The relationship between the molecular weight of tetrazolium cations, and the association constants of their complexes has been discussed. The special behavior of the tetrazolium cations, containing-NO2 groups has been noticed. The effects of foreign ions and reagents on the extraction of vanadium with TAR and the best tetrazolium salt-MTT have been studied. A sensitive, selective, simple and fast method for the determination of vanadium has been developed. [...]
Wydawca
Czasopismo
Rocznik
Tom
5
Numer
1
Strony
257-270
Opis fizyczny
Daty
wydano
2007-03-01
online
2007-03-01
Twórcy
  • Department of General and Inorganic Chemistry, Plovdiv University, 4000, Plovdiv, Bulgaria , kgavazov@abv.bg
autor
  • Department of General and Inorganic Chemistry, Plovdiv University, 4000, Plovdiv, Bulgaria
  • Department of General and Inorganic Chemistry, Plovdiv University, 4000, Plovdiv, Bulgaria
  • Department of Chemical Technology, Plovdiv University, 4000, Plovdiv, Bulgaria
Bibliografia
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Typ dokumentu
Bibliografia
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Identyfikator YADDA
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