In:
MRS Proceedings, Springer Science and Business Media LLC, Vol. 802 ( 2003)
Kurzfassung:
A series of glass samples were prepared analogously to high level waste glass using either glass frit or glass precursors combined with a high level waste surrogate containing NaTcO 4 . Three different technetium species were observed in these glasses depending upon the synthesis conditions. If the glasses were prepared by reducing NaTcO 4 to TcO 2 •2H 2 O with hydrazine or if a large amount of organic material was present, inclusions of TcO 2 were observed. If no organic material was present, technetium was incorporated as TcO 4 − . If only a small amount of organic material was present, isolated Tc(IV) sites were observed in the glass. The relative technetium retention of these glasses was estimated from the Tc K-edge height, and had no correlation with the oxidation state of the technetium. Pertechnetate was well retained in these glasses.
Materialart:
Online-Ressource
ISSN:
0272-9172
,
1946-4274
DOI:
10.1557/PROC-802-DD3.3
Sprache:
Englisch
Verlag:
Springer Science and Business Media LLC
Publikationsdatum:
2003
