Extractant property | Extractant | 2-hr |
| 6-hr | ||||
Se | As | Cr | Se | As | Cr | |||
pH | DI | 0.96** | −0.64 | 0.54 |
| −0.45 | 0.40 | −0.29 |
| RW | 0.19 | 0.78 | 0.69 |
| 0.85 | 0.33 | 0.08 |
| GW | −0.34 | −0.27 | 0.37 |
| −0.72 | 0.34 | −0.86 |
ECa (µS∙cm−1) | DI | −0.72 | 0.45 | −0.93* |
| 0.59 | 0.09 | 0.31 |
| RW | 0.29 | −1.00*** | −0.23 |
| 0.95** | 0.64 | 0.59 |
| GW | −0.22 | 0.12 | −0.29 |
| 0.80 | −0.06 | 0.46 |