Table 1.
Summary of electrochemical parameters for SPEs fabricated onto paper towel, waxed paper, and Parafilm M®, before (SPE) and after (CB-SPE) the modification with 2 μL of a CB dispersion.
| Substrate for SPE Fabrication | SPE (i/μA) * | SPE (∆E/V) ** | CB-SPE (i/μA) * | CB-SPE (∆E/V) ** | Equation Using CB-SPE |
|---|---|---|---|---|---|
| Paper towel | 16.7 ± 2.0 | 0.66 ± 0.07 | 18.0 ± 2.7 | 0.45 ± 0.05 | y = 5.2 + 4.5 x |
| R2 = 0.9877 | |||||
| Waxed paper | 11.2 ± 1.8 | 1.38 ± 0.13 | 13.3 ± 2.0 | 0.84 ± 0.07 | y = 2.9 + 2.3 x |
| R2 = 0.9881 | |||||
| Parafilm M® | 17.1 ± 2.4 | 1.33 ± 0.15 | 17.4 ± 1.9 | 0.76 ± 0.08 | y = 1.5 + 3.2 x |
| R2 = 0.9781 |
* Anodic current; ** ∆E at 0.05 V/s.