Oxidation State of Neptunium and Plutonium and Their Leaching from Sodium–Aluminum–(Iron) Phosphate Glasses
- Autores: Stefanovsky S.V.1,2, Maslakov K.I.3, Teterin Y.A.3,4, Kalmykov S.N.3, Danilov S.S.5, Teterin A.Y.4, Ivanov K.E.4
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Afiliações:
- Frumkin Institute of Physical Chemistry and Electrochemistry
- Radon Federal State Unitary Enterprise
- Moscow State University
- National Research Center Kurchatov Institute
- Vernadsky Institute of Geochemistry and Analytical Chemistry
- Edição: Volume 478, Nº 1 (2018)
- Páginas: 6-10
- Seção: Physical Chemistry
- URL: https://journals.rcsi.science/0012-5016/article/view/153807
- DOI: https://doi.org/10.1134/S0012501618010025
- ID: 153807
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Resumo
The oxidation states of neptunium and plutonium in doped sodium–aluminum–(iron) phosphate glasses have been determined by X-ray photoelectron spectroscopy. Neptunium is present in the form of Np(IV) as Np4+ and, in smaller amounts, in the form of Np(V) as neptunyl ions. Plutonium is present mainly in the form of Pu(IV) and additionally Pu(III). The most easily water-leachable element is neptunium, which is attributed to its existence in the mobile form of neptunyl (NpO2)+. The leaching rates of plutonium and impurity americium are approximately two orders of magnitude lower.
Sobre autores
S. Stefanovsky
Frumkin Institute of Physical Chemistry and Electrochemistry; Radon Federal State Unitary Enterprise
Autor responsável pela correspondência
Email: serge.stefanovsky@yandex.ru
Rússia, Moscow, 119071; Moscow, 119121
K. Maslakov
Moscow State University
Email: serge.stefanovsky@yandex.ru
Rússia, Moscow, 119991
Yu. Teterin
Moscow State University; National Research Center Kurchatov Institute
Email: serge.stefanovsky@yandex.ru
Rússia, Moscow, 119991; Moscow, 123182
S. Kalmykov
Moscow State University
Email: serge.stefanovsky@yandex.ru
Rússia, Moscow, 119991
S. Danilov
Vernadsky Institute of Geochemistry and Analytical Chemistry
Email: serge.stefanovsky@yandex.ru
Rússia, Moscow, 119991
A. Teterin
National Research Center Kurchatov Institute
Email: serge.stefanovsky@yandex.ru
Rússia, Moscow, 123182
K. Ivanov
National Research Center Kurchatov Institute
Email: serge.stefanovsky@yandex.ru
Rússia, Moscow, 123182
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