| Organic compounds | Linear range (g∙mL−1) | Regression equation (C: g∙mL−1) | Correlation coefficient |
| Pyrocatechol | 3 × 10−10 - 1 × 10−8 | lg(−ΔI) = 6.6832 + 0.3947 lgC | 0.9937 |
| L-dopamine | 9 × 10−11 - 5 × 10−8 | lg(−ΔI) = 6.8107 + 0.4610 lgC | 0.9933 |
| L-ascorbic acid | 6 × 10−11 - 2.5 × 10−7 | lg(−ΔI) = 4.4666 + 0.2619 lgC | 0.9932 |
| Hydroquinone | 6 × 10−11 - 2.5 × 10−8 | lg(−ΔI) = 10.0460 + 0.8444 lgC | 0.9904 |
| Resorcinol | 6 × 10−11 - 2.5 × 10−8 | lg(−ΔI) = 3.5072 + 0.1571 lgC | 0.9951 |
| Pyrogallic acid | 1 × 10−10 - 1 × 10−5 | lgΔI = 6.9787 + 0.5314 lgC | 0.9971 |
| L-cysteine | 5 × 10−8 - 1 × 10−5 | lgΔI = 8.5024 + 0.8499 lgC | 0.9929 |