Abstract
Scheme of a two-column 225Ac/213Bi generator using inorganic sorbents based on hydrated titanium oxide (JSC “Termoxid”) and hydrated zirconium oxide modified with nickel-potassium ferrocyanide (Termoxid, T-35) is suggested. 213Bi is obtained via a prolonged washing-out of 221Fr from the first column with T-5 sorbent containing 225Ac and its retention in the second column with T-35 for the decay and accumulation of 213Bi, which is extracted afterwards with a 1 M HCl solution. The direct-flow and circulatory schemes were tested, and the properties of the generator toward radionuclides of the 225Ac subfamily were determined in a wide range of flow rates and eluent volumes. It is assumed that the sorbents of the T-5 and T-35 brands are suitable for creating a 225Ac/213Bi generator with activity of hundreds of 225Ac mCi.
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ACKNOWLEDGMENTS
The authors are grateful to the scientific supervisor B.L. Zhuikov for permanent interest in the study, his every support of the study, and corrections of the manuscript.
Funding
The study was carried out on the equipment of the Collective use center of the Institute of Nuclear Research, Russian Academy of Sciences (Agreement with the Ministry of Education and Science of the Russian Federation no. 14.621.21.0014, Unique identifier RFMEF 162117X0014).
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Betenekov, N.D., Ermolaev, S.V. & Skasyrskaya, A.K. Development of a 225Ac/213Bi Generator with Two Inorganic Sorbents. Processes Involving Radionuclides of the 225Ac Subfamily. Radiochemistry 62, 524–531 (2020). https://doi.org/10.1134/S1066362220040098
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DOI: https://doi.org/10.1134/S1066362220040098