Table 1.
Comparison between the Co-poly(Met)/GCE-assisted DPV method and other electrochemical methods for estriol determination.
| Electrode | Technique | Linear range (µmol/L) | Limit of detection (mol/L) | Sample | Ref. |
|---|---|---|---|---|---|
| CCh/WGE | SWV | 0.5–9.0 | 5.0 × 10−8 | Blood serum | [26] |
| GCE/Pt/MWCNTs | SWV | 10.0–75.0 | 6.2 × 10−7 | Blood serum | [27] |
| BDDE | SWV | 0.2–20.0 | 1.7 × 10−7 | Pharmaceutical and urine | [28] |
| GCE/Lac/rGO/Sb2O5 | Chronoamperometry | 0.025–1.0 | 1.1 × 10−8 | Urine | [19] |
| SPCE/CNT | Amperometry | 1.0–1000 | 5.3 × 10−7 | Pharmaceutical | [29] |
| CPE/Fe3O4NPs | SWV | 3.0–110.0 | 2.6 × 10−6 | Pharmaceutical and simulated urine | [30] |
| RGO-GNPs-PS/GCE | LSV | 1.5–22.0 | 4.8 × 10−7 | Water and urine | [31] |
| PGMCPE | CV | 2.0–100.0 | 8.7 × 10−7 | Injections | [32] |
| rGO/AgNPs/GCE | DPV | 0.1–3.0 | 2.1 × 10−8 | Tap water and synthetic urine | [33] |
| Co-poly(Met)/GCE | DPV | 0.596–9.90 | 3.4 × 10−8 | Pharmaceutical and urine | This work |
CCh/WGE: Carbamylcholine (CCh) modified paraffin-impregnated graphite electrode; GCE/Pt/MWCNTs: Pt nanoclusters and multi-wall carbon nanotubes composite glassy carbon electrode; SWV: square-wave voltammetry; BDDE: boron doped diamond electrode; Lac/rGO/Sb2O5: reduced graphene oxide doped with Sb2O5 film and with immobilized laccase enzyme; SPCE/CNT: screen-printed carbon electrode modified with carbon nanotubes; CPE/Fe3O4NPs: carbon paste electrode (CPE) modified with ferrimagnetic nanoparticles (Fe3O4NPs). GNPs: Gold nanoparticles; PS: Potato starch; PG: poly glycine; MCPE; modified carbon paste electrode; AgNPs: Silver nanoparticles.