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2012 | 10 | 4 | 1262-1270
Tytuł artykułu

Extraction-spectrophotometric investigations on two ternary ion-association complexes of gallium(III)

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Complex formation and liquid-liquid extraction were studied in systems containing Ga(III), azoderivative of resorcinol {4-(2-pyridylazo)resorcinol (PAR) or 4-(2-thiazolylazo)resorcinol (TAR)}, 2,3,5-triphenyltetrazolium chloride (TTC), water and chloroform. The optimum conditions w.r.t. pH, extraction time, concentration of ADR and concentration of TTC for the extraction of Ga(III) as an ion-associate complex were found.. The composition of the extracted complexes, (TT+)[Ga(PAR)2] (I), (TT+)[Ga(TAR)2] (II) or (TT+)2[Ga(OH)(TAR)2] (III), and the constants of association (β) between 2,3,5-triphenyltetrazolium cation (TT+) with corresponding anionic chelates were established by several methods. The constants of distribution (KD) and extraction (Kex) of the principal species I and III were determined as well. The apparent molar absorptivities of the chloroform extract at the optimum extraction-spectrophotometric conditions were ɛ′510=9.5×104 L mol−1 cm−1 (I) and ɛ′530=4.6×104 L mol−1 cm−1 (III). The validity of Beer’s law was checked and analytical characteristics that were calculated are reported herein. [...]
Wydawca

Czasopismo
Rocznik
Tom
10
Numer
4
Strony
1262-1270
Opis fizyczny
Daty
wydano
2012-08-01
online
2012-05-29
Twórcy
  • Department of General and Inorganic Chemistry, University of Plovdiv, 4000, Plovdiv, Bulgaria
  • Department of General and Inorganic Chemistry, University of Plovdiv, 4000, Plovdiv, Bulgaria, kgavazov@abv.bg
  • Department of General and Inorganic Chemistry, University of Plovdiv, 4000, Plovdiv, Bulgaria
autor
  • Department of General and Inorganic Chemistry, University of Plovdiv, 4000, Plovdiv, Bulgaria
  • Department of General and Inorganic Chemistry, University of Plovdiv, 4000, Plovdiv, Bulgaria
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11532-012-0045-y
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