| Method/reagent Parameter | Copper(II) | KMnO4 |
| Colour | Colourless | Green |
| lmax (nm) | 332 | 610 |
| Beer’s law limits (µg・ml−1) | 10.69 - 85.50 | 5.34 - 34.12 |
| Ringborn limts (µg・ml−1) | 12.59 - 81.28 | 7.08 - 31.62 |
| Molar absorptivity (L・mol-1・cm-1) | 0.361 × 104 | 0.80 × 104 |
| Sandel’s sensitivity (µg・cm-2) | 0.1480 | 0.0668 |
| Regression equation A = a + bc | A = 6.55 × 10-3C − 8.62 × 10-4 | A = 0.0147C + 6.79 × 10-3 |
| Slope (b) | 6.55 × 10-3 | 0.0147 |
| Intercept (a) | 8.62 × 10-4 | 6.79 × 10-3 |
| Correlation coefficient | 0.9999 | 0.9969 |
| Limit of detection (LOD) (µg・ml−1) | 0.101 | 0.355 |
| Limit of quantification (LOQ) (µg・ml−1) | 0.305 | 1.075 |