Table 3. Leaching Results in Relation to Retention and Efficiency for Each Sample Studied.
Bq | |||||
---|---|---|---|---|---|
P | SSA-B10 | SSA-B30 | SSA-BP10 | SSA-B30 | |
total initial activity | 335 ± 1 | 312 ± 12 | 355 ± 15 | 305 ± 5 | 355 ± 15 |
2 h | 9 ± 0 | 13 ± 0 | 17 ± 1 | 13 ± 2 | 17 ± 1 |
7 h | 20 ± 0 | 24 ± 1 | 27 ± 1 | 25 ± 0 | 27 ± 1 |
1 day | 17 ± 1 | 20 ± 1 | 21 ± 1 | 22 ± 2 | 21 ± 1 |
2 days | 11 ± 1 | 11 ± 0 | 11 ± 1 | 11 ± 1 | 11 ± 1 |
3 days | 11 ± 1 | 11 ± 1 | 11 ± 1 | 11 ± 0 | 11 ± 1 |
4 days | 11 ± 1 | 11 ± 1 | 11 ± 1 | 11 ± 1 | 11 ± 1 |
5 days | 11 ± 0 | 12 ± 1 | 11 ± 0 | 15 ± 0 | 11 ± 0 |
6 days | 11 ± 1 | 10 ± 0 | 10 ± 0 | 14 ± 0 | 10 ± 0 |
7 days | 8 ± 0 | 10 ± 0 | 11 ± 1 | 14 ± 0 | 11 ± 1 |
8 days | 9 ± 0 | 10 ± 0 | 10 ± 0 | 11 ± 0 | 10 ± 0 |
9 days | 9 ± 0 | 9 ± 0 | 11 ± 0 | 11 ± 0 | 11 ± 0 |
10 days | 6 ± 1 | 8 ± 1 | 9 ± 0 | 10 ± 1 | 9 ± 0 |
11 days | 4 ± 0 | 4 ± 1 | 3 ± 0 | 4 ± 1 | 3 ± 0 |
total leachate per sample | 134 ± 1 | 150 ± 1 | 160 ± 1 | 170 ± 3 | 160 ± 1 |
retained in samples | 201 ± 0 | 162 ± 11 | 195 ± 16 | 136 ± 8 | 195 ± 16 |
retention efficiency | 60 ± 0 | 52 ± 2 | 55 ± 2 | 44 ± 2 | 55 ± 2 |
leaching rate (cm d–1) | 2.55 × 10–5 | 2.85 × 10–5 | 3.05 × 10–5 | 3.23 × 10–5 | 3.25 × 10–5 |