Dependence of the migration ability of plutonium and americium in soils on additions of natural and modified organic compounds

• Published in: Radiochemistry (New York, N.Y.) Vol. 55; no. 6; pp. 639 - 646
• Main Authors: Goryachenkova, T. A., Kazinskaya, I. E., Ryleeva, V. S., Abramova, A. V., Novikov, A. P.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01-11-2013
• Subjects: Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Nuclear Chemistry; modified humic acid derivatives; americium; soils; plutonium
• ISSN: 1066-3622; 1608-3288
• DOI: 10.1134/S1066362213060143

The nature and content of modified humic acid derivatives influence the intensity of the recovery of Pu, Am, and C
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from soddy podzolic soil with distilled water. Under the dynamic conditions, these radionuclides are recovered more intensely in the presence of carboxylated humic acids, compared to the hydroxymethylated derivatives. When soils with the introduced modified humic acid derivatives are subjected to prolonged washing with distilled water, the radionuclides undergo redistribution within the columns, suggesting their migration. Under the action of dissolved organic substances isolated from soils (low-molecular-weight nonspecific organic compounds and fulvic acids), the radionuclide migration in soils occurs still more intensely. In the course of soil column washing with an aqueous phase containing the dissolved organic matter, Pu and Am pass into the mobile state to a greater extent than in washing the soils with distilled water.