A rapid method for the separation of Po-210 from Pb-210 by TIOA extraction

A rapid method for the separation of Po-210 from Pb-210 was developed utili zing extraction of triisooctylamine (TIOA)/xylene in HCl+H2O2, medium. Polo nium in the form of PoCl62- was extracted into TIOA phase and Pb-210 remain s in the aqueous phase. Lead-210 was determined by alpha -counting of its g randdaughter. Po-210 ingrown from Pb-210 for some period of time. Distribut ion of Po-210 and Pb-210 in TIOA and aqueous phases was investigated in var ious concentrations of HCl media. Hydrogen peroxide was used to further dec ompose organic matter and to remove sulfur to prevent its deposition on the silver disc. The improved procedure resulted in a good chemical yield (80- 95%) and a good alpha -resolution.