Table 1.
Comparison the sensing performances toward the detection of sunset yellow between the existing modified electrodes and the proposed Cu2O-ErGO/GCE.
| Modified Electrodes | Method | Metrological Parameters | Linear Range (μmol/L) | LOD (μmol/L) | Reference |
|---|---|---|---|---|---|
| PLPA/GCE | DPV | 0.1 M phosphate-citrate buffer solution (pH 7.0); accumulation for 60 s | 0.04–14 | 0.040 | [42] |
| MIP/f-MWCNTs/GCE | DPV | 0.1 M CBS solution (pH 5.0); accumulation for 30 min; scanned at 10 mV/s | 0.05–100 | 0.005 | [43] |
| Au-Pd-RGO/GCE | DPV | 0.1 M PBS (pH 4.0); scanned at 50 mV/s | 0.69–332 | 0.0015 | [17] |
| CTAB-Gr-Pt/GCE | DPV | 0.1 M PBS (pH 3.0); accumulation for 3 min | 0.0085–1.0; 1.0–30 |
0.0042 | [44] |
| GO/AgNPs-MIPs/GCE | LSV | 0.1 M PBS (pH 5.5); accumulation for 7 min; scanned at 50 mV/s | 0.1–0.6; 0.6–12 |
0.02 | [45] |
| ILRGO-Au/GCE | SWV | 0.1 M BR buffer solution (pH 7.0); accumulation for 300 s | 0.004–1.0 | 0.00052 | [13] |
| Au NPs/CPE | DPV | 0.1 M PBS (pH 4.0); accumulation for 1 min; modulation amplitude = 60 mV and scan rate = 60 mV/s | 0.1–2.0 | 0.03 | [7] |
| MWCNT/GCE | DPV | 0.1 M PBS (pH 7.0); accumulation at open circuit potential for 2 min; potential increment of 0.004 V, pulse amplitude of 0.05 V, and pulse period of 0.2 s | 0.55–7.0 | 0.12 | [46] |
| PDDA-Gr-Pd/GCE | DPV | 0.1 M PBS (pH 3.0); accumulation for 5 min | 0.01–10 | 0.002 | [47] |
| Fe3O4@SiO2-NPs@MIP/Gr/GCE | DPV | 0.1 M PBS (pH 8.0); pulse amplitude = 0.05 V; pulse interval time = 0.05 s, and scan rate = 0.02 V/s for differential pulse voltammetry | 0.02–20 | 0.0055 | [48] |
| Cu2O-ErGO/GCE | SDLSV | 0.1 M PBS (pH 3.8); accumulation at 0.4 V for 180 s; scanned at 100 mV/s | 0.02–20; 20–100 |
0.006 | This work |