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Determination of cerium in fission products by extraction with di(2-ethylhexyl)phosphoric acid

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Summary

The extraction of cerium, oxidized to the tetravalent state, from nitric acid medium by di(2-ethylhexyl)phosphoric acid in hexane was studied. The effect of nitric acid concentration, agent concentration, oxidizer amount, and carrier concentration on the yield of cerium extraction was investigated and the optimum conditions of the extraction were found. Under these conditions, the reproducibility of the method was determined and the extraction of other fission products (Sr, Cs, Zr, and Ru) was also tested. The procedure was verified by the determination of cerium in artificial and real mixtures of fission products.

Zusammenfassung

Es wurden Untersuchungen angestellt über die Extraktion von vierwertigem Cer aus salpetersaurer Lösung mit Hilfe von Di-(2-äthylhexyl)-phosphorsäure in Hexan. Im einzelnen wurde der Einfluß der Konzentration an Salpetersäure, Reagens, Oxydationsmittel und Träger auf die Extraktionsausbeute geprüft und die optimalen Bedingungen festgelegt. Weiterhin wurde die Reproduzierbarkeit des Verfahrens bestimmt und bei der Anwendung auf künstliche und natürliche Gemische von Spaltprodukten das Verhalten der anderen Elemente (Sr, Cs, Zr, Ru) untersucht.

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Authors and Affiliations

  1. Institute of Nuclear Research, Řez, Czechoslovakia

    J. Krtil, M. Bezděk & J. Mencl

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  1. J. Krtil
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  2. M. Bezděk
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  3. J. Mencl
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Krtil, J., Bezděk, M. & Mencl, J. Determination of cerium in fission products by extraction with di(2-ethylhexyl)phosphoric acid. Z. Anal. Chem. 235, 401–413 (1968). https://doi.org/10.1007/BF00497323

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  • DOI: https://doi.org/10.1007/BF00497323

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