Table 1.
Comparison of our setup with other electrochemical sensors for the determination of Cd2+ by DPV.
| Modified Electrode | Method | Linear Range (molL−1) | Detection Limit (molL−1) | Reference |
|---|---|---|---|---|
| Chitosan-carbon nanotubes/GCE | SWASV | 1.3 × 10−5–3.9 × 10−5 | 7.1 × 10−6 | [46] |
| LAL-AuNPs/GCE | SWASV | 3.0 × 10−7–1.4 × 10−6 | 3.0 × 10−7 | [47] |
| Porous carbon-PdNPs/GCE | DPV | 5.0 × 10−7–5.5 × 10−6 | 4.1 × 10−8 | [48] |
| MIL-53(Fe)/GCE | DPV | 1.5 × 10−7–4.5 × 10−7 | 1.6 × 10−8 | [49] |
| Fe3O4/RGO/GCE | SWASV | 0−8 × 10−7 | 5.6 × 10−8 | [2] |
| Nano-PPCPE | DPASV | 10−7–3 × 10−6 | 7.8 × 10−8 | [50] |
| PA/PPY/GO/GCE | DPV | 4.4 × 10−8–1.3 × 10−6 | 1.9 × 10−8 | [51] |
| MSK-NPs@GRCPE | DPASV | 5 × 10−11–2 × 10−6 | 5.44 × 10−9 | [52] |
| NH2@GCE | DPV | 3 × 10−7–1.5 × 10−5 | 2 × 10−7 | [53] |
| GCE/ZSM-5/Pt (5.4%) | DPV | 10−7–7.2 × 10−6 | 1.2 × 10−9 | [54] |
| PPh3/MWCNTs/IL/CPE | DPASV | 1 × 10−10–1.5 × 10−7 | 7.4 × 10−5 | [55] |
| GCE/SBA-15/ZrO2 (30%) | SWASV | 10−7–5.5 × 10−6 | 3.14 × 10−7 | [56] |
| SiO2/GCE | DPV | 5 × 10−7–2.5 × 10−6 | 5 × 10−7 | This work |
| ZnO@SiO2/GCE | DPV | 2.5 × 10−11–1.75 × 10−10 and 2 × 10−10–1.75 × 10−9 | 4.4 × 10–11 | This work |
SWASV: square wave anodic stripping voltammetry; DPASV: differential pulse anodic stripping voltammetry; DPV: differential pulse voltammetry; LAL: laser ablation in liquid; Fe3O4/RGO/GCE: magnetite-reduced graphene oxide modified glassy carbon electrode; Nano-PPCPE: nanoporous pseudo carbon paste electrode; PA/PPY/GO/GCE: Phytic acid-functionalized polypyrrole–graphene oxide functionalized glassy carbon electrode.