Table 1.
Chemical properties of the saline soda lime
| Surface | Interior | |
|---|---|---|
| pH | 10.81 ± 0.10 | 10.84 ± 0.06 |
| ECe (dS m−1) | 378 ± 20.20 | 423 ± 13.00 |
| Chlorides (g kg−1) | 108.64 ± 3.10 | 122.02 ± 2.36 |
| Sodium (g kg−1) | 56.22 ± 3.31 | 63.21 ± 2.84 |
| Calcium (g kg−1) | 23.97 ± 0.25 | 24.28 ± 0.18 |
| Water content (%) | 27.80 ± 1.39 | 68.85 ± 4.68 |
| Total organic carbon (g kg−1) | 2.94 ± 0.96 | 3.23 ± 0.82 |
| Organic nitrogen (mg kg−1) | <LOD | 32.97 ± 5.24 |
| Nitrates (mg kg−1) | <LOD | <LOD |
| Ammonia nitrogen (mg kg−1) | <LOD | 3.9 ± 0.20 |
| Total phosphorus (mg kg−1) | 29.63 ± 6.32 | 27.63 ± 5.98 |
The values are given as means ± SD; for organic nitrogen and ammonia nitrogen LOD (limit of detection) <0.01 mg kg−1, for nitrates LOD <0.001 mg kg−1