Table 2.
Physicochemical properties of plasma functionalized buffer.
| Voltage (V) | pH | Temperature (℃) | ORP (mV) |
EC (mS/cm) |
O3 (mg/L) |
H2O2 (µM) |
NO2– (mM) |
NO3– (mM) |
|---|---|---|---|---|---|---|---|---|
| 0 | 3.75 ± 0.01a | 25.35 ± 0.55c | 414.25 ± 5.85c | 5.61 ± 0.23c | 0.68 ± 0.06a | 0.006 ± 0.002b | 0.00c | 0.00c |
| 50 | 2.69 ± 0.02b | 44.70 ± 0.70b | 600.88 ± 4.33b | 7.24 ± 0.08b | 0.40 ± 0.04b | 1.611 ± 0.132a | 2.72 ± 0.20b | 9.33 ± 0.35b |
| 60 | 2.67 ± 0.01b | 48.15 ± 1.05ab | 614.10 ± 4.50ab | 8.15 ± 0.10a | 0.36 ± 0.03b | 2.041 ± 0.204a | 3.18 ± 0.08ab | 10.94 ± 0.07a |
| 70 | 2.60 ± 0.01c | 49.75 ± 1.00a | 630.79 ± 1.05a | 8.72 ± 0.01a | 0.38 ± 0.03b | 2.257 ± 0.098a | 3.38 ± 0.06a | 11.94 ± 0.04a |
ORP: oxidation–reduction potential; EC: electrical conductivity. Values are mean of triplicate measurements ± standard error of measurements; values with different letters in the same column indicate significant differences at p < 0.05.