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Sorption of Mo(VI) on zirconium molybdosilicate gel and potential application as a 99Mo/99mTc generator

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Radiochemistry Aims and scope

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 99mTcO –4 ).

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Authors and Affiliations

  1. Radioactive Isotopes and Generators Department, Hot Laboratories Center, Atomic Energy Authority, P.O. Box 13759, Cairo, Egypt

    M. Mostafa, H. M. Saber & A. A. El-Sadek

  2. Chemistry Department, Faculty of Science, Benha University, Benha, 13518, Egypt

    M. Y. Nassar & A. S. Amin

Authors
  1. M. Mostafa
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  2. H. M. Saber
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  3. A. A. El-Sadek
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  4. M. Y. Nassar
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  5. A. S. Amin
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Correspondence to M. Mostafa.

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Published in Russian in Radiokhimiya, 2016, Vol. 58, No. 4, pp. 354–358.

The text was submitted by the authors in English.

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Mostafa, M., Saber, H.M., El-Sadek, A.A. et al. Sorption of Mo(VI) on zirconium molybdosilicate gel and potential application as a 99Mo/99mTc generator. Radiochemistry 58, 409–414 (2016). https://doi.org/10.1134/S106636221604010X

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  • DOI: https://doi.org/10.1134/S106636221604010X

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