Development and Utilization of the inorganic polymer materials for ~(99)Mo-~(99m)Tc and ~(188)W-~(188)Re generator based on (n, gamma) method

摘要

A molybdenum (Mo) adsorbent called PZC (Poly Zirconium Compound) with high efficiency of Mo adsorption has been developed in order to generate ~(99m)Tc from ~(99)Mo produced from natural Mo by (n, gamma) method. The ~(99m)Tc generator using PZC has cleared mostly the technical subjects. By the results of many experiments, cold and hot test with ~(99)Mo activity from low level (10~5 Bq) to high level (10~(10) Bq), it has been confirmed that the PZC method can be practically applied for the (n,gamma) ~(99)Mo-~(99m)Tcgenerator. From the reasons that PZC has the ability and many merits such as high adsorption capacity (>250 mg-Mo/g-PZC) of Mo, high elution yield (av. 80%) of ~(99m)Tc, the low breakthrough(<0.05 kBq-~(99m)Mo/MBq-~(99m)Tc) of ~(99)Mo and others, the current (n, fission) ~(99m)Tcgenerator utilizing ~(99)Mo produced from enriched uranium will be taken the place by PZC method. In this paper, the practicability of PZC and a newly developed functional material PTC as the (n, gamma) ~(99)Mo-~(99m)Tc generator, and an ability of PZC as the ~(188)W-~(188)Regenerator will be shown.