Utilization of high specific activity 99Mo for assessing the active manganese oxide as a potential material for 99Mo/99mTc generator.

The hydrothermal preparation of active MnO₂ via KMnO₄ and MnSO₄.H₂O as inorganic forerunners is demonstrated, and it is evaluated as an adsorbent for the ⁹⁹Mo produced by ²³⁵U fission. The structure and morphology of MnO₂ were distinguished using various methods such as FTIR spectrum, FESEM, EDX, XRD, TGA. The ⁹⁹Mo adsorption conduct on active manganese oxide was investigated, and the Mo uptake capacity was determined using static and dynamic techniques, and it was found to be 22.8 ± 1 and 6.72 ± 0.3 mg/g MnO₂, respectively. This sorbent material was used in preliminary studies to prepare a ⁹⁹Mo/^99mTc generator. ^99mTc eluted from the prepared generator was estimated to be 78–82 % with a low ⁹⁹Mo breakthrough (0.002 %) and acceptable radiochemical, radionuclidic, and chemical purities. [ABSTRACT FROM AUTHOR]