Table 4 Conditions of through-diffusion experiments in cells Prec1, Prec2 and Prec3 (clogging by celestite precipitation from 0.5 M SrCl2 and Na2SO4 solutions in reservoirs) and celestite masses determined
Experiment | Background (mol L−1) | HTO tracer (kBq L−1) | Duration of run (days) | Acid selective dissolution (mg) | µCT mass estimation (mg) | |
|---|---|---|---|---|---|---|
NaCl | Si4+ | |||||
Prec1 | 0.001 | None | None | 362 | 21.7 ± 0.4 | 20–30* |
Prec2 | 0.500 | None | 4,210 | 158 | 31.6 ± 0.4 | nd |
Prec3 | 0.500 | 1.74 × 10−4 | 4,240 | 78 | 35.6 ± 0.4 | nd |