All-chromatographic method for the recovery of Americium-241 from solutions of complex composition

被引：7

作者：

Kharitonov, O. V. ^{[1
]}

Firsova, L. A. ^{[1
]}

Kozlitin, E. A. ^{[1
]}

机构：

[1] Russian Acad Sci, Frumkin Inst Phys Chem & Electrochem, Lab Radioact Elements Chromatog, Bldg 4 31 Leninsky Prospect, Moscow 119071, Russia

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2020年 / 326卷 / 01期

关键词：

Displacement complexing chromatography; Sulfocationites; Rare earth elements; Americium; Recovery; Separation; GRAM AMOUNTS; SEPARATION; AMERICIUM; LANTHANIDES; EXTRACTION; CURIUM;

D O I：

10.1007/s10967-020-07336-w

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

This paper reported creating the all-chromatographic technique for the recovery of americium radionuclides from solutions of the complex composition generated in the radiochemical industry. The technique was based entirely on the displacement complexing chromatography; neither additional precipitation nor extraction stages were necessary. The technology used the elution with DTPA and NTA-based solutions containing the citric acid additives and the sequential elution with these eluents, emphasizing the separation of americium from the heavy rare earth elements, lead, and cadmium. The complete separation of americium from lead and cadmium was a peculiar exercise; the elution order of lead and cadmium changed in the presence of the citric acid additives. The recovery and separation of americium from actual radioactive waste solutions of different origins demonstrated 96 and 99% chemical purity of the final product.

引用

页码：627 / 636

页数：10

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