DETERMINATION OF IMPURITIES IN THE ELUATE OF RHENIUM GENERATOR USING HYDRATED MAGNESIUM-OXIDE AS THE PRECONCENTRATION AGENT

In recent years chances of using rhenium-186 and rhenium-188 as radioa ctive isotopes in diagnostic and therapeutic applications are increase d very much due to the characteristic radiochemical and chemical prope rties of these two radioisotopes. In particular, chemical similarities between Tc-99 and Tc-99m pair and Re-186 and Re-188 pair make it easi er to correlate the two groups of compounds. Rhenium-lss is generated from the beta-decay of tungsten-188 which was produced by double neutr on capture on enriched tungsten-186 oxide. It is of great interest to examine the impurities in the eluate by radiochemical neutron activati on. For this purpose, the preconcentration of the impurities in sample s were necessary, and it was achieved by adsorption on hydrated magnes ium oxide.