Separation of the 90Sr–90Y pair with cerium(IV) iodotungstate cation exchanger

A new inorganic ion exchanger, cerium(IV) iodotungstate, has been synthesized and characterized by elemental analysis and IR spectroscopy. This inorganic material is very stable thermally, chemically and with respect to radiation. Its ion exchange capacity for alkali and alkaline earth metal ions has been studied. 90Y has been successfully separated from its parent 90Sr in the equilibrium mixture with this exchanger at pH 6.0 with 0.0063 M EDTA solution as an eluent.