Comparison of variously pretreated ion-exchange resins for 131I separation from aqueous solutions

Preliminary results of experimental testing and comparison of 131I separation efficiency from model solutions on ion-exchange resins pretreated in some special ways are presented. Strongly basic and strongly acidic resins were pretreated chemically and used for the separation of radioiodine by means of isotopic exchange, ion exchange or chemisorption and of their combinations. The sorbents were tested for pI, pH, their stability during storage and selectivity of separation. From the point of view of the efficiency and selectivity of separation the sorbents based on strongly basic resins and with assumed isotopic exchange mechanism of radioiodine separation appear to be relatively more advantageous. (author)