LIQUID-LIQUID-EXTRACTION AND REVERSED-PHASE CHROMATOGRAPHIC-SEPARATION OF PARENT-DAUGHTER, ZR-95 NB-95, WITH TOA

Effective separation of the parent and daughter, in the equilibrium mi xture, Zr-95-Nb-95, was achieved through liquid-liquid extraction, rev ersed phase column and Paper chromatographic procedure using trioctyla mine (TOA) as the liquid anion exchanger. In liquid-liquid extraction system, TOA in cyclohexane was used as the extractant for separation o f the Zr-95 and Nb-95 in their pair in aqueous solution containing H2S O4, oxalic acid and H2O2 at different concentrations. In reversed phas e chromatographic techniques, the hydrophobized kieselgur impregnated with TOA and Whatman No. 1 chromatographic paper coated with the reage nt were used respectively as stationary phase in RPCC and RPPC respect ively. In both cases of chromatographic separation, mixtures of H2SO4, oxalic acid and H2O2, with specific concentration, were used as mobil e phases. At the optimum conditions, the mutual separation and the dec ontamination of the parent, Zr-95, from the daughter, Nb-95, as verifi ed through gamma-ray spectrometric studies, were found to be quantitat ive.