Accurate measurement of 55Fe in radioactive waste

A radiochemical method was developed for the accurate 55 Fe determination in various radioactive waste, in particular samples contaminated with 241 Pu. It consisted of three purification steps based on first ammonium hydroxide precipitation, and then anion exchange separation followed by TRU ® -base...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2020, Vol.326 (1), p.591-601
Main Authors: Gautier, Céline, Laporte, Elodie, Lambrot, Gabriel, Giuliani, Margaux, Colin, Christèle, Bubendorff, Jacques, Crozet, Marielle, Mougel, Caroline
Format: Article
Language:English
Subjects:
Ammonium hydroxide
Anion exchanging
Chemical Sciences
Chemistry
Chemistry and Materials Science
Chloroform
Decontamination
Diagnostic Radiology
Hadrons
Heavy Ions
Inorganic Chemistry
Iron
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
Plutonium
Radioactive wastes
Radiochemistry
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Summary:A radiochemical method was developed for the accurate 55 Fe determination in various radioactive waste, in particular samples contaminated with 241 Pu. It consisted of three purification steps based on first ammonium hydroxide precipitation, and then anion exchange separation followed by TRU ® -based extraction chromatography. It was characterized by an iron recovery yield of about 80% for all the studied samples and a 60 Co decontamination factor of 10 6 . In comparison to a standard protocol based on iron cupferrate extraction in chloroform, an improvement of a 30-fold factor was achieved towards plutonium. The developed TRU ® -based procedure was validated by participating in interlaboratory exercises.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-020-07332-0