Sorption of Mo(VI) on zirconium molybdosilicate gel and potential application as a 99Mo/99mTc generator
- Authors: Mostafa M.1, Saber H.M.1, El-Sadek A.A.1, Nassar M.Y.2, Amin A.S.2
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Affiliations:
- Radioactive Isotopes and Generators Department, Hot Laboratories Center
- Chemistry Department, Faculty of Science
- Issue: Vol 58, No 4 (2016)
- Pages: 409-414
- Section: Article
- URL: https://journals.rcsi.science/1066-3622/article/view/223443
- DOI: https://doi.org/10.1134/S106636221604010X
- ID: 223443
Cite item
Abstract
Sorption of Mo(VI) from aqueous nitrate solutions onto zirconium molybdosilicate (ZrMoSi) gel was studied using 99Mo radiotracer. The acid–base titration curve showed that the prepared ZrMoSi gel was an amphoteric material with the point of zero charge (PZC) at pH 2.5. The highest distribution coefficient (600 mL g–1) of 99Mo(VI) on ZrMoSi from nitrate media was achieved at pH 2.1. The sorption kinetics of 99Mo(VI) onto ZrMoSi obeyed the pseudo-second-order model. The breakthrough sorption capacity of ZrMoSi gel was found to be 4.25 × 10–2 [mmol Mo(VI)] g–1. The prepared 99Mo/99mTc chromatographic column generator showed a good performance: The 99mTc elution yield was 87.7%, pH of the eluate ranged from 5.6 to 7.2, and the radionuclidic purity of the eluted 99mTc was >99.99% with a radiochemical purity of 98.31% (as 99mTcO4–).
About the authors
M. Mostafa
Radioactive Isotopes and Generators Department, Hot Laboratories Center
Author for correspondence.
Email: mmostafa95@yahoo.com
Egypt, Cairo
H. M. Saber
Radioactive Isotopes and Generators Department, Hot Laboratories Center
Email: mmostafa95@yahoo.com
Egypt, Cairo
A. A. El-Sadek
Radioactive Isotopes and Generators Department, Hot Laboratories Center
Email: mmostafa95@yahoo.com
Egypt, Cairo
M. Y. Nassar
Chemistry Department, Faculty of Science
Email: mmostafa95@yahoo.com
Egypt, Benha, 13518
A. S. Amin
Chemistry Department, Faculty of Science
Email: mmostafa95@yahoo.com
Egypt, Benha, 13518