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Radiochemical separation of 161 Tb from neutron irradiated Gd target by liquid-liquid extraction technique

  • Ahmed M. Shahr El-Din EMAIL logo , Mohamed A. Gizawy ORCID logo and Emad H. Borai
Published/Copyright: September 3, 2024

Abstract

No-carrier-added (NCA) 161 Tb, which has advisable nuclear properties to be applied for cancer radiotherapy was produced at the Egyptian Second Research Reactor (ETRR-2) by neutron irradiation of natural gadolinium target via indirect nuclear reaction. The radiochemical separation of 161 Tb from irradiated gadolinium target was investigated based on solvent extraction technique using Cyanex 302. Several separation parameters were checked and optimized. According to the obtained results, the separation process of the investigated radioisotopes proceeds in two steps. The first step is an extraction of all of them into the organic phase in which the extraction % (98 %) was optimized at pH 4, 0.15 M of Cyanex 302 and 2.5 h extraction time. Moreover, the slope analysis method confirmed the participation of 2 mol of the organic extractant for the separation of 161 Tb from irradiated gadolinium. The second step is the separation of the 161 Tb isotope that was purified by the stripping of 159Gd with a citrate solution at pH 9, which is considered as a highly efficient and promising method for separation and purification of the two radioisotopes.


Corresponding author: Ahmed M. Shahr El-Din, Analytical Chemistry Department, Hot Laboratories Center, Egyptian Atomic Energy Authority, 13759, Cairo, Egypt, E-mail:

Acknowledgments

The authors would like to acknowledge and extend appreciation to the crew of the Egyptian Second Nuclear Research Reactor (ETRR-2) at the EAEA for their valuable assistance in the course of irradiation of the target in due time. Also, the authors are grateful to Hot Laboratories and Waste Management Center for their kind cooperation and help in providing the necessary laboratory facilities to carry out this work.

  1. Research ethics: Not applicable.

  2. Author contributions: Ahmed M. Shahr El-Din, Mohamed A. Gizawy and Emad H. Borai put the idea of research points and the conceptualization. Ahmed M. Shahr El-Din, Mohamed A. Gizawy conducted the research and investigation process, specifically performing the experiments. Ahmed M. Shahr El-Din, Mohamed A. Gizawy and Emad H. Borai did writing, review, editing and visualization.

  3. Competing interests: The authors declare no conflicts of interest.

  4. Research funding: This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

  5. Data availability: Not applicable.

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Received: 2024-02-22
Accepted: 2024-08-13
Published Online: 2024-09-03
Published in Print: 2024-12-17

© 2024 Walter de Gruyter GmbH, Berlin/Boston

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