The Influence of Radiation on Confinement Properties of Nuclear Waste Glasses

Table 9

Effect of γ-irradiation on leaching rate of glass PNL 76–68 with account for radiolysis [54].

Sample	a	b	c	d	e	f
T (°С)	50	50	50	50	90	90
Time of leaching, days	5	5	5	5	13	13
Contact with air	No	No	No	+	No	+
Irradiation before leaching	No	+	No	No	No	No
Irradiation during the leaching	No	No	+	+	No	+
Content of elements in water solution after leaching, 10^−4 wt.%
Na	0.82	0.96	4.7	5.0	18.5	130.0
Cs	0.1	0.1	0.18	0.4	2.2	9.1
Ca	0.11	0.13	0.41	0.8	1.0	7.8
Ba	0.02	0.03	0.07	0.19	0.1	0.8
Sr	0.02	0.03	0.07	0.14	0.2	1.4
Si	1.6	1.9	5.5	6.5	21.0	177.1
B	0.26	0.29	0.85	1.1	4.5	31.3
Mo	0.1	0.12	0.38	0.1	2.6	7.2
Zn	0.06	0.07	0.80	2.0	0.09	37.6
Nd	<0.02	<0.02	0.13
Ce	<0.04	<0.04	<0.04
Fe	<0.005	<0.005	0.015	0.67	<0.05	0.2
pH before/after irradiation	5.7/7.2	5.7/7.2	5.7/6.5	5.7/3.3	5.7/8.5	4.7/4.6