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The determination of caesium 137 in irradiated uranium and irradiated thorium using anion-exchange paper and the ring oven technique

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Summary

By use of a strongly basic anion-exchange resin paper in the hydroxide or carbonate forms, caesium 137 can be separated from irradiated uranium solutions on a ring oven. A ring oven separation of caesium 137 from irradiated thorium can also be achieved by using an oxalate-hydroxide form resin paper. In each case the caesium 137 is washed to the ring zone with water and determined byγ-ray spectrometry. The coefficient of variation of the methods is less than 2 per cent.

Zusammenfassung

Mit einem stark basischen Anionenaustauschpapier in der Hydroxid- oder Carbonatform kann137Cs aus bestrahlten Uranlösungen auf einem Ringofen abgetrennt werden. Mit einem Oxalat-Hydroxid-Harzpapier läßt sich137Cs auch von bestrahltem Thorium auf einem Ringofen trennen. In beiden Fällen wird137Cs mit Wasser in die Ringzone gespült und durchγ-Strahlspektrometrie bestimmt. Die Methoden unterliegen Abweichungen von weniger als 2%.

Résumé

Par l'emploi d'un papier échangeur d'anion sous forme hydroxyde ou carbonate, le césium 137 peut être séparé de solutions d'uranium irradié au four annulaire. On peut aussi séparer, au four annulaire, le césium 137 du thorium irradié, avec un papier résineux sous forme hydroxyde-oxalate. Dans chacun cas, le césium 137 est chassé vers la zone annulaire par de l'eau et déterminé par spectrométrieγ. Les méthodes peuvent fournir une précision meilleure que 2 pour cent.

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Hilton, D.A., Reed, D. The determination of caesium 137 in irradiated uranium and irradiated thorium using anion-exchange paper and the ring oven technique. Mikrochim Acta 54, 508–512 (1966). https://doi.org/10.1007/BF01219362

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  • DOI: https://doi.org/10.1007/BF01219362

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