We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Sorption of <sup>237</sup>Np(V), <sup>238</sup>U(VI), and <sup>137</sup>Cs on clays: Role of surface films of Fe(III) compounds.
- Authors
Sabodina, M. N.; Zakharova, E. V.; Kalmykov, S. N.; Pokholok, K. V.; Menyailo, A. A.
- Abstract
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.
- Subjects
ABSORPTION; MINERALOGICAL chemistry; RADIOACTIVE wastes; ELECTRON microscopy; SPECTRUM analysis
- Publication
Radiochemistry, 2008, Vol 50, Issue 1, p91
- ISSN
1066-3622
- Publication type
Article
- DOI
10.1134/S1066362208010153