Sorption of 237Np(V), 238U(VI), and 137Cs on clays: Role of surface films of Fe(III) compoundsстатья
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Scopus
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Дата последнего поиска статьи во внешних источниках: 4 февраля 2014 г.
Авторы:
Sabodina M.N. ,
Zakharova E.V. ,
Kalmykov S.N. ,
Pokholok K.V. ,
Menyailo A.A.
Журнал:
Radiochemistry
Том:
50
Номер:
1
Год издания:
2008
Издательство:
Pleiades Publishing, Inc.
Местоположение издательства:
New York, USA
Первая страница:
91
Последняя страница:
97
DOI:
10.1007/s11137-008-1015-2
Аннотация:
Mineralogical and sorption properties of sandy-argillaceous rocks proposed as a material of protecting barriers in near-surface repositories of nuclear wastes were studied. Different sorption behavior with respect to Np(V), U(VI), and 137Cs is caused by formation of iron-containing films on the particle surface of coarse (>0.25 mm) and fine (<0.01 mm) rock fractions. The presence of Fe in the compositions of different minerals contained in the rock (chlorite, illite, montmorillonite, and hematite) was determined by scanning electron microscopy with X-ray probe microanalysis (SEM-XPMA), transmitting electron microscopy with electron energy loss spectroscopy (TEM-EELS), and Mössbauer spectroscopy. Hematite is present in the form of both separate particles and films on quartz grains. The Fe fraction in these formations was estimated. © 2008 MAIK Nauka.
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Калмыков Степан Николаевич