Hostname: page-component-7bb8b95d7b-dvmhs Total loading time: 0 Render date: 2024-09-07T10:12:18.787Z Has data issue: false hasContentIssue false
  • English
  • Français

Uranium Speciation in Glass Corrosion Layers: an XAFS Study

Published online by Cambridge University Press:  03 September 2012

Bruce M. Biwer ,
L. Soderholm ,
R. B. Greegort  and
F. W. Lytle
Bruce M. Biwer
Affiliation:
Argonne National Laboratory, Argonne IL 60439
L. Soderholm
Affiliation:
Argonne National Laboratory, Argonne IL 60439
R. B. Greegort
Affiliation:
The Boeing Company, Seattle, WA 98124 and
F. W. Lytle
Affiliation:
The EXAFS Company, Pioche, NV 89043
Get access

Abstract

Uranium L3 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 (UO2)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.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 465: Symposium II – Scienfific Basis for Nuclear Waste Management XX , 1996 , 229
Copyright
Copyright © Materials Research Society 1997

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Lytle, F.W., in Applications of Synchrotron Radiation, Winick, H., et al. , Editors. 1989, Gordon and Breach, p. 135.Google Scholar
2. Greaves, G.N., Barrett, N.T., Antonini, G.M., Thornley, F.R., Willis, B.T.M., and Steel, A., J. Am. Chem. Soc., 111, 4313 (1989).Google Scholar
3. Abrajano, T.A., Bates, J.K., Woodland, A.B., Bradley, J.P., and Bourcier, W.L., Clays & Clay Minerals, 38, 537 (1990).Google Scholar
4. Mazer, J.J., Bates, J.K., Biwer, B.M., and Bradley, C.R., Mat. Res. Soc. Symp. Proc., 257, 73 (1992).Google Scholar
5. Elam, W.T., Kirkland, J.P., Neiser, R.A., and Wolf, P.D., Phys. Rev. B, 38, 26 (1988).Google Scholar
6. Girardeau, T., Mimault, M., Jaouen, M., Chartier, P., and Tourillon, G., Phys. Rev. B, 46, 7144 (1992).Google Scholar
7. Biwer, B.M., Bates, J.K., Abrajano, T.A., and Bradley, J.P., Mat. Res. Soc. Symp. Proc, 176, 255 (1990).Google Scholar
8. Bourcier, W.L., Mat. Res. Soc. Symp. Proc, 112, 3 (1991).Google Scholar
9. Grambow, B. and Strachan, D.M., Mat. Res. Soc. Symp. Proc, 112, 713 (1991).Google Scholar
10. Wald, J.W., 1985, Pacific Northwest Laboratory.Google Scholar
11. MCC-1P Static Leach Test Method, Nuclear Waste Materials Handbook\9Sl, Materials Characterization Center.Google Scholar
12. Keski-Rahkonen, O. and Krause, M.O., At. Data Nucl. Data Tables, 14, 139 (1974).Google Scholar
13. The EXAFS Co. Pioche NV 89043.Google Scholar
14. Eller, P.G., Jarvinen, G.D., Purson, J.D., Penneman, R.A., Ryan, R.R., Lytle, F.W., and Greegor, R.B., Radiochim. Acta, 39, 17 (1985).Google Scholar
15. Petiau, J., Calas, G., Petitmaire, D., Bianconi, A., Benfatto, M., and Marcelli, A., Phys. Rev. B, 34, 7350 (1986).Google Scholar
16. Zachariasen, W.H., Acta Crystallogr., 1, 265 (1948).Google Scholar
17. Siegel, S., Hoekstra, H.R., and Sherry, E., Acta Crystallogr., 20, 292 (1966).Google Scholar
18. Greegor, R.B., Lytle, F.W., Chakoumakos, B.C., Lumpkin, G.R., and Ewing, R.C., Mat. Res. Soc. Symp. Proc, 50, 387 (1985).Google Scholar
19. Hench, L., Clark, D. E., and Yen-Bower, E.L., Nucl. Chem. Waste Manag., 1, 59 (1980).Google Scholar
20. Hudson, E.A., Rehr, J.J., and Bücher, J.J., Phys. Rev. B, 22, 13815 (1995-1).Google Scholar
21. Schreiber, H.D., Minnix, L.M., Balazs, G.B., and Carpenter, B.E., Phys. Chem. Glasses, 25, 1 (1984).Google Scholar
22. Antonio, M.R. and Soderholm, L. (unpublished).Google Scholar
23. Schreiber, H.D., Balazs, G.B., and Solberg, T.N., Phys. Chem. Glasses, 26, 35 (1985).Google Scholar
24. Feng, X., Buck, E.C., Mertz, C., Bates, J.K., Cunnane, J.C., and Chaiko, D.J., Radiochim. Acta. 66/67. 197 (1994).Google Scholar