Collect. Czech. Chem. Commun. 1979, 44, 1568-1580

Study of the reactions of alizarin green dyes with vanadates in the presence of cetyltrimethylammonium and Ag(1,10-phen)2+ cations

Nguyen Truong Sona, Jan Lasovskýb, Eduard Ružičkaa, Jiří Šimeka and Jaroslava Szotkowskáa

a Department of Analytical and Organic Chemistry
b Department of Inorganic and Physical Chemistry, Palacký University, 771 46 Olomouc


The reactions of five dyes of the alizarin green series with vanadates in the presence of cetyltrimethylammonium (CTA+, S) or Ag(1,10-phen)2+ cations were studied. At lower concentrations of tenside than the cmc value, defined ternary complexes with composition VL2S4 or VL2S6 or quaternary complexes VL3[Ag(1,10-phen)2]9 are formed in solution. The equilibrium constants of the studied complexation reactions were determined and a method for the photometric and chelometric determination of vanadium were proposed.