Linear regression equations of net current ΔI and COD value of the two-component solutions of An/RhB and RhB/KHP
| . | An:RhB . | RhB:KHP . | ||
|---|---|---|---|---|
| Volume ratios . | Linear regression equation (ΔI, μA; COD, mg/L) . | R2 . | Linear regression equation (ΔI, μA; COD, mg/L) . | R2 . |
| 1:9 | ΔI = 1.78·COD + 180.33 | 0.991 | ΔI = 1.69·COD + 142.13 | 0.993 |
| 2:8 | ΔI = 1.98·COD + 184.10 | 0.994 | ΔI = 1.74·COD + 148.27 | 0.992 |
| 3:7 | ΔI = 2.30·COD + 188.58 | 0.990 | ΔI = 1.68·COD + 155.34 | 0.995 |
| 4:6 | ΔI = 2.43·COD + 193.36 | 0.995 | ΔI = 1.65·COD + 161.87 | 0.990 |
| 5:5 | ΔI = 2.46·COD + 196.68 | 0.995 | ΔI = 1.72·COD + 168.05 | 0.995 |
| . | An:RhB . | RhB:KHP . | ||
|---|---|---|---|---|
| Volume ratios . | Linear regression equation (ΔI, μA; COD, mg/L) . | R2 . | Linear regression equation (ΔI, μA; COD, mg/L) . | R2 . |
| 1:9 | ΔI = 1.78·COD + 180.33 | 0.991 | ΔI = 1.69·COD + 142.13 | 0.993 |
| 2:8 | ΔI = 1.98·COD + 184.10 | 0.994 | ΔI = 1.74·COD + 148.27 | 0.992 |
| 3:7 | ΔI = 2.30·COD + 188.58 | 0.990 | ΔI = 1.68·COD + 155.34 | 0.995 |
| 4:6 | ΔI = 2.43·COD + 193.36 | 0.995 | ΔI = 1.65·COD + 161.87 | 0.990 |
| 5:5 | ΔI = 2.46·COD + 196.68 | 0.995 | ΔI = 1.72·COD + 168.05 | 0.995 |
An, RhB, and KHP represent aniline, rhodamine B, and potassium hydrogen phthalate, respectively.