LUMINESCENCE OF THENOYLTRIFLUOROACETONATO COMPLEXES OF EUROPIUM AND CURIUM IN AQUEOUS-SOLUTIONS OF SURFACTANTS

The influence of surfactants on the intensity, decay time, and spectrum of the luminescence of aqueous solutions of thenoyltrifluoroacetonato complexes of curium with several trialkylphosphine oxides and 1,10-phenanthroline has been studied. Displacement of the maximum in the luminescence spectrum is observed for solutions of the Cm-TTA and Cm-TTA-phen complexes in the presence of Triton X-100 and OP-7. As in the case of europium, in the case of all the complexes of curium studied, as well as a suspension of the complex of gadolinium with TTA and 1,10-phenanthroline, increases in the intensity and decay time of the luminescence are observed in the presence of a surfactant. The detection limit of curium in the Gd-TTA-surfactant suspension investigated, as well as in suspensions of complexes with TTA and phosphine oxides containing different radicals, is equal to 1.10(-13) g/ml.