Table 1.
Comparison of the response of reduced graphene oxide (rGO) and cellulose nanocrystal (CNC)–rGO modified electrodes toward possible interference species at two different concentration ratios. MP—methyl paraben.
| Interference | Current (µA) | |||||||
|---|---|---|---|---|---|---|---|---|
| rGO | CNC–rGO Nanocomposite | |||||||
| 1:1 | tcalculated | 1:10 | tcalculated | 1:1 | tcalculated | 1:10 | tcalculated | |
| MP | 23.43 ± 1.36 | - | 36.10 ± 1.41 | - | 18.11 ± 2.99 | - | 18.81 ± 1.65 | - |
| MP + ascorbic acid | 29.22 ± 1.58 | 1.000 | 29.59 ± 2.40 * | 2.97 | 17.03 ± 1.20 | 1.05 | 11.83 ± 1.44 | 1.33 |
| MP + salicylic acid | 25.32 ± 6.30 | 0.590 | 26.86 ± 3.56 * | 3.24 | 17.22 ± 0.55 | 0.47 | 20.51 ± 1.21 | 1.18 |
| MP + benzoic acid | 23.41 ± 4.12 | 0.005 | 33.10 ± 0.62 * | 5.59 | 17.34 ± 1.74 | 0.30 | 15.47 ± 1.35 | 1.41 |
| MP + citric acid | 23.61 ± 2.29 | 0.086 | 34.81 ± 3.22 | 0.74 | 16.82 ± 0.38 | 0.36 | 16.85 ± 1.92 | 2.35 |
Note: If tcalculated > tcritical, * indicates a significant difference where Tcritical = 2.92 (95% confidence level).