Collect. Czech. Chem. Commun. 1982, 47, 503-508

Spectrophotometric study of the reactions of lanthanoids with bromopyrogallol red in the presence of cation active tensides

Irena Němcová, Pavla Plocková and Tran Hong Con

Department of Analytical Chemistry, Charles University, 128 40 Prague 2


The absorption spectra of the binary complexes of lanthanoids with bromopyrogallol red were measured and the formation of ternary complexes with cation active tenside, Septonex, was studied. Optimal conditions were found for the formation of these complexes and the possibility of their use in the photometric determination of lanthanoids was demonstrated on several examples.