Table 1.
Comparison of the analytical performance of different label-free electrochemical immunosensors for AFP detection.
| Modified electrode | Technique | Linear range (ng mL−1) | LOD (ng mL−1) | Ref |
|---|---|---|---|---|
| BSA/AFP-Ab/SnO2/Au/RGO/GCE | DPV | 0.02–50 | 0.01 | 35 |
| BSA/AFP-Ab/Pd–rGO/GCE | DPV | 0.01–12 | 0.005 | 36 |
| BSA/AFP-Ab/AuNPs/PGNR/GCE | DPV | 5–60 | 1.0 | 37 |
| BSA/AFP-Apt/TH/RGO/AuNPs/SPCE | DPV | 100–100,000 | 50 | 2 |
| BSA/AFP-Apt/GO/GCE | CV | 0.01–100 | 0.003 | 17 |
| BSA/AFP-Apt/PtNPs/GO-COOH/SPGE | SWV | 3–30 | 1.22 | This work |
Ab antibody, Apt aptamer, Pd–rGO palladium–reduced graphene oxide, PGNR porous graphene nanoribbon, TH/RGO/AuNPs thionin/reduced graphene oxide/gold nanoparticles.