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Physicochemical parameters of each PAW at RT.
| PAW | pH | EC (μS/cm) | ORP (mV) | NO3− (mg/L) | NO2− (mg/L) |
|---|---|---|---|---|---|
| PAW-1.5 | 4.46 ± 0.15 | 25 ± 5 | 315 ± 13 | 3.67 ± 0.31 | 0.74 ± 0.05 |
| PAW-5 | 4.01 ± 0.17 | 52 ± 7 | 355 ± 10 | 4.13 ± 0.15 | 2.58 ± 0.27 |
| PAW-15 | 3.58 ± 0.09 | 103 ± 13 | 383 ± 9 | 9.90 ± 1.30 | 3.47 ± 0.13 |
| PAW-30 | 3.10 ± 0.12 | 190 ± 15 | 408 ± 21 | 17.90 ± 2.05 | 5.01 ± 0.87 |
