Table 2.
Comparison of the analytical features of different electrodes used for determination of NTX.
| Electrode | Method | Optimum pH | LOD/M | Linear Range/M | Ref |
|---|---|---|---|---|---|
| Dropping mercury electrode | – | 6.0 | – | 0.1 × 10–3–0.5 × 10–3 | 22 |
| Mercury electrode | DC-polarography | 6.0 | 3 × 10–5 | 3 × 10–5–2.5 × 10–4 | 18 |
| Differential-pulse adsorptive stripping voltammetry | 6.0–7.0 | 1.31 × 10–8 | – | ||
| Square-wave adsorptive stripping voltammetry | 6.0–7.0 | 8.4 × 10–10 | – | ||
| Glassy carbon electrode (GCE) | SWV | 2.0 | 0.28 × 10–6 | 3.49 × 10–6–47.62 × 10–6 | 24 |
| GCE modified with SWCNT | SWV | 2.0 | 0.36 × 10–6 | 2.00 × 10–6–99.10 × 10–6 | 23 |
| GCE modified with MWCNT | 0.16 × 10–6 | 0.99 × 10–6–90.91 × 10–6 | |||
| GCE modified with Graphene functionalized using carboxylic groups | 0.11 × 10–6 | 2.99 × 10–6–65.42 × 10–6 | |||
| GCE modified with carbon nanohorns (CNHs) | 0.34 × 10–6 | 2.00 × 10–6–90.91 × 10–6 | |||
| Carbon paste electrode (CPE) | SWV | 3.0 | 3.1 × 10–7 | 3.9 × 10–6–1.0 × 10−4 | This work |