Radiation Stability of Sorbents in Medical ²²⁵Ac/²¹³Bi Generators

Abstract

The radiation resistance of sorbents AG 50 W-X8, Ac resin, and UTEVA resin in contact with hydrochloric solutions under irradiation with 10 MeV electrons in a wide absorbed-dose range up to 2 MGy was studied. Mass distribution ratios and total sorption capacity were used as quantitative measures to determine the changes in ion exchange or extractive abilities of the resins. Based on the data obtained and on a review of the performance of the 225Ac/213Bi generators reported in the literature, the applicability of investigated resins for high activity loaded onto different generator systems was concluded.