Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
171665 | Comptes Rendus Chimie | 2007 | 7 Pages |
Abstract
The speciation of plutonium and neptunium in colloid suspension collected from the contaminated aquifer of the “Mayak” site was studied by nano-SIMS, XPS and XANES. At tracer level concentration found in original groundwater sample Pu is sorbed onto hydrous ferric oxide colloids, while at higher concentration relevant to near-field conditions it forms intrinsic PuO2 × nH2O colloids. The formation of such colloids occurs through the reduction of Pu(V) to Pu(IV) upon its sorption.
Keywords
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Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Stepan N. Kalmykov, Vladimir V. Kriventsov, Yuri A. Teterin, Alexander P. Novikov,