A method is studied of obtaining highly concentrated
99mTc solution from
99Mo to be produced by
98Mo(
n, γ)
99Mo reaction. After extraction of
99mTc with MEK from
99Mo/
99mTc alkaline solution and purification of
99mTc with basic alumina column,
99mTc is adsorbed to acidic alumina column and eluted from that. In this study, a preliminary study of examining performance of
99mTc for adsorption and elution with acidic alumina was carried out using inactive Re instead of
99mTc. The amounts of Re corresponding to 15 TBq levels of
99mTc were used for 7 g of acidic alumina packed in 12 mmϕ and 14 mmϕ columns. Effect of flow rates on some effluents used was also examined.The results show that the amounts of Re corresponding to 2.5 TBq from 36.7 TBq can be favorably adsorbed to acidic alumina column and eluted from it in a short time, slightly depending on the amounts of Re treated. Finally, it made clear that acidic alumina column is applicable to the mass production of highly concentrated
99mTc solution from (
n, γ)
99Mo in the levels of about 15 TBq to be handled in JMTR.
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