Actinide speciation in glass leach-layers: An EXAFS study
Conference
·
OSTI ID:459339
- 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 leach layer. The leach-layer uranium concentration variations with leaching times are also determined from the data.
- Research Organization:
- Argonne National Lab., IL (United States); Boeing Co., Seattle, WA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research, Washington, DC (United States)
- DOE Contract Number:
- FG06-84ER45121; W-31109-ENG-38
- OSTI ID:
- 459339
- Report Number(s):
- ANL/CHM/CP--90465; CONF-961202--93; ON: DE97003769
- Country of Publication:
- United States
- Language:
- English
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