The Nature of the Volatile Technetium Species Formed During Vitrification of Borosilicate Glass

Authors

B.C. Childs, University of Nevada, Las VegasFollow
F. Poineau, University of Nevada, Las VegasFollow
Kenneth R. Czerwinski, University of Nevada, Las VegasFollow
Alfred P. Sattelberger, University of Nevada, Las VegasFollow

Document Type

Article

Publication Date

5-26-2015

Publication Title

Journal of Radioanalytical and Nuclear Chemistry

Volume

306

Issue

2

First page number:

417

Last page number:

421

Abstract

Vitrification of sodium pertechnetate into borosilicate glass was performed in air at 1100 °C. A glass with a composition similar to the one developed for vitrification of the low activity waste at the Hanford site was used. A red volatile species was observed above 600 °C. The extended X-ray absorption fine structure results indicate the environment of the absorbing Tc atom consists of 2.9(6) O atoms at 1.73(2) Å, 2.2(4) O atoms at 2.02(2) Å, and 0.8(2) O atoms at 2.18(2) Å. The results are consistent with the presence of a mononuclear species with a structure closely related to TcO3(OH)(H2O)2.

Keywords

Tecnetium; Volatile; Red; Vitrification; X-ray absorbance spectroscopy

Repository Citation

Childs, B., Poineau, F., Czerwinski, K. R., Sattelberger, A. P. (2015). The Nature of the Volatile Technetium Species Formed During Vitrification of Borosilicate Glass. Journal of Radioanalytical and Nuclear Chemistry, 306(2), 417-421.
http://dx.doi.org/10.1007/s10967-015-4203-5