Isotopic exchange reaction between barium ion and tri barium phosphate

Heterogeneous exchange reaction of tri barium phosphate in barium chloride solution has been studied using 133Ba as a tracer. The results show that the exchange fraction increases as barium chloride concentration increases for different mole ratio of the exchange ion on the solid surface and in the solution. The phenomenon was studied with respect to the previous treatment of the precipitate leading to different crystal sizes and the effect of reaction time. (author)