APPLICATION OF Br-82 AS A RADIOACTIVE TRACER ISOTOPE TO STUDY BROMIDE ION-ISOTOPIC EXCHANGE REACTION IN STRONGLY BASIC ANION EXCHANGE RESIN DUOLITEA-161

摘要

In the present investigation Br-82 radioactive isotope was used as a tracer to study the kinetics of exchange reaction taking place between the ion exchange resin and the external bromide ion solution. In an attempt to study the reversible bromide ion-isotopic exchange reaction kinetics, it was expected that whether the initial step was the exchange of radioactive bromide ions form the solution on to the ion exchange resin (forward reaction), or from the ion exchange resin in to the solution (reverse reaction), the two ion-isotopic exchange reactions should occur simultaneously, which was further confirmed from the values of specific reaction rate 0.122 and 0.123 min~(–1) respectively obtained under identical experimental conditions. The radioactive tracer technique employed in the present investigation will be useful for characterization of various industrial grade ion exchange resins