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Selective sorption characteristics of electrolytic manganese dioxide

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Abstract

Selective sorption characteristics of electrolytic manganese dioxide (EMD) were investigated by dynamic tests using different types of water under varying conditions of235U activity, chemical species and flow rate in the presence of226Ra. EMD showed selectivity for ions having an effective ionic radius of about 1.4 Å indicating a selective sieve mechanism supporting a tunnel type structure. Sorption of235U under all experimental conditions is small (<1%) due to the larger sizes of urano-complexes (>3.54 Å). The Ra2+ ion (size ≈2.86 Å) was selectively extracted by EMD so that226Ra can be measured directly by gamma spectrometry using the 186 keV gamma line.

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  1. Centre for Medical and Health Physics, Queensland University of Technology, GPO Box 2434, 4001, Brisbane, QLD, (Australia)

    G. Koulouris

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  1. G. Koulouris
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Koulouris, G. Selective sorption characteristics of electrolytic manganese dioxide. Journal of Radioanalytical and Nuclear Chemistry, Articles 204, 183–191 (1996). https://doi.org/10.1007/BF02060879

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  • DOI: https://doi.org/10.1007/BF02060879

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