Table 2.
Summary of the Limit of Detection (LOD) and reproducibility obtained using CV and SWV in the analyses of several concentrations of HQ and BQ in PBS solution. All analytical parameters are obtained from CV and SWV traces.
| Bare Electrode |
SWNT | MWNT | GNP | ||
|---|---|---|---|---|---|
| HydroQuinone (HQ) | |||||
| CV | LOD (μM) | 90.3 | 8.5 | 11.6 | 15.8 |
| Reproducibility (RSD%) | 15 | 4 | 6 | 7 | |
| SWV | LOD (μM) | 12.3 | 0.04 | 0.07 | 0.3 |
| Reproducibility (RSD%) | 17 | 5 | 8 | 8 | |
| BenzoQuinone (BQ) | |||||
| CV | LOD (μM) | 95.7 | 9.3 | 12.3 | 17.5 |
| Reproducibility (RSD%) | 15 | 5 | 5 | 8 | |
| SWV | LOD (μM) | 17.3 | 0.05 | 0.08 | 1.4 |
| Reproducibility (RSD%) | 18 | 6 | 7 | 9 | |