Influence of bicarbonate ions and redox conditions on the surface composition of a leached borosilicate glass
A series of short leaching tests have been performed on a borosilicate glass (I117) up to a maximum of 40 days. The tests were performed in a closed system in oxic and anoxic conditions and in presence of bicarbonate ions. The bicarbonate ions do not influence the mass losses while the oxic condition gives rise to higher mass losses. Surface analysis was performed on the surface layer for the elements uranium and iron. Uranium is always depleted at the surface of the samples. It appears that adsorption and diffusion in the layer play an important part in the release of uranium. Iron on the contrary is enriched so that solubility of the formed species is responsible for its concentration.
Bibliographic Reference: EUR 12022 EN (1989) MF, 23 pp., ECU 4, blow-up copy ECU 5
Record Number: 198910390 / Last updated on: 1994-12-01
Original language: en
Available languages: en