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Ion-exchange chromatography using citrate buffer, EDTA and α-HIBA for improving the separation of no-carrier-added 139Ce from La2O3 target irradiated with 14.5 MeV protons

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Abstract

The adsorption behaviour of La/Ce system on Dowex 50W-X8 in different media, namely, nitric acid, acetate buffer and citrate buffer was studied as a function of the concentration of nitric acid and buffer pH. In addition, in cation-exchange column chromatography experiments, three different eluants, namely, citrate buffer of pH 5.5, 0.1 M EDTA and 0.2 M α-HIBA, were employed for separation of Ce(III) from La(III). The optimum conditions for improvement of radiochemical separation of no-carrier-added 139Ce from proton irradiated lanthanum were applied using the most suitable chelating agent 0.2 M α-HIBA. The purification of 139Ce from macro amount of La(III) was done using two columns in a sequence. The target was prepared by pressing. The production of high radionuclidic and chemical purity 139Ce via irradiation of lanthanum oxide target at MGC-20 cyclotron of proton energy 14.5 MeV was described. The experimental yield was found to be 200 kBq/μA h.

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Authors and Affiliations

  1. Cyclotron Facility, Nuclear Research Centre, Atomic Energy Authority, Cairo, 13759, Egypt

    S. A. Kandil, H. A. Hanafi, H. Aglan & Z. A. Saleh

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  1. S. A. Kandil
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  2. H. A. Hanafi
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  3. H. Aglan
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  4. Z. A. Saleh
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Correspondence to S. A. Kandil.

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Kandil, S.A., Hanafi, H.A., Aglan, H. et al. Ion-exchange chromatography using citrate buffer, EDTA and α-HIBA for improving the separation of no-carrier-added 139Ce from La2O3 target irradiated with 14.5 MeV protons. J Radioanal Nucl Chem 283, 609–614 (2010). https://doi.org/10.1007/s10967-009-0392-0

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  • DOI: https://doi.org/10.1007/s10967-009-0392-0

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