Substantiation of the 248Cm Material Purification Method

• Published in: Radiochemistry (New York, N.Y.) N.Y.), 2022, Vol.64 (5), p.632-640
• Main Authors: Andreev, O. I., Rotmanov, K. V., Goncharova, G. V., Chernookaya, E. V., Abdullov, R. G., Butkalyuk, P. S., Butkalyuk, I. L., Enizerkina, A. Yu, Abbyazova, V. G., Borzova, A. V.
• Format: Article
• Language: English
• Subjects: Anion exchanging; Cation exchanging; Cationic polymerization; Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Chromatography; Elution; Hydroxyisobutyric acid; Ion exchange; Ions; Nuclear Chemistry; Purification; Saline solutions; Selectivity; Separation; Sorbents
• ISSN: 1066-3622; 1608-3288
• DOI: 10.1134/S1066362222050071

The experimental data are presented on the purification of Am, Cm from Pu and Fe by anion-exchange chromatography with the Bio-Rad AG1-X8 sorbent (50–100 mesh) as well as data on the separation of Am, Cm, and Cf by ion-exchange chromatography with Bio-Rad AG50W-X8 cation exchange resin (200–400 mesh) in the NH 4 + form. Sorption was carried out from a solution of 0.1 M HNO 3 , followed by elution with a solution of the ammonium salt of α-hydroxyisobutyric acid (hereinafter α-HIBA) with pH 5.0. The α-HIBA ammonium salt concentration was varied within 0.1–0.2 M. The best results were achieved with successive elution with α-HIBA ammonium salt solutions at concentrations of 0.1 and 0.15 M. The characteristics of the developed chromatographic process of cation exchange purification of Cm using an α-HIBA ammonium salt solution as an eluent were determined: the number of theoretical plates N , distribution coefficient D , selectivity (separation factor) α, and resolution R S .