Uranium speciation in glass corrosion layers: An XAFS study
Conference
·
OSTI ID:572044
- Argonne National Lab., IL (United States)
- Boeing Co., Seattle, WA (United States)
- EXAFS Co., Pioche, NV (United States)
Uranium L{sub 3} X-ray absorption data were obtained from two borosilicate glasses, which are considered as models for radioactive wasteforms, both before and after leaching. Surface sensitivity to uranium speciation was attained by a novel application of simultaneous fluorescence and electron-yield detection. Changes in speciation are clearly discernible, from U(VI) in the bulk to (UO{sub 2}){sup 2+}-uranyl in the corrosion layer. The uranium concentrations within the corrosion layer also show variations with leaching times that can be determined from the data.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG06-84ER45121
- OSTI ID:
- 572044
- Report Number(s):
- CONF-961202--
- Country of Publication:
- United States
- Language:
- English
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