Table 1.
Comparison of the analytical performance of HDPBA‒MWCNTs/CPE with other electrodes reported in the literature for the detection of Zn(II).
| Electrodea | Technique | Preconcentra-tion time (s) | Liner range (nM) | LOD (nM) | Reproducibility, RSD (%) | Sensitivity (μA/μΜ) | Epa (V) | Ref. |
|---|---|---|---|---|---|---|---|---|
| Hg nanodroplets Supported at biochar-modified CPE |
DPASV | 180 | 500–30000 | 170 | – | – | ‒1.10 | [39] |
| Boron-doped diamond Electrode |
DPV | 240 | 76.50–624.3 | 2.45 | <5 | 14.1 | ≈ −1.20 | [40] |
| MCPE modified with chelating resin | DPV | 90 | 153–765 | 109 | 4.0 | 38.3 | ‒1.05 | [41] |
| Cr‒CPE | SWASV | 100 | 1224–12240 | 382 | – | 0.71 | ≈ −1.20 | [42] |
| Bismuth film-modified Electrode |
DPASV | 110 | 76.50–1683 | 16.7 | 1.74 | – | ≈ −1.18 | [10] |
| G/PANI/SPE | SWASV | – | 15.30–4590 | 15.3 | 9.2 | 1.48 | ‒1.31 | [43] |
| Hg–Bi/SWNTs/GCE | SWASV | 120 | 7.650–1989 | 3.57 | – | – | ‒1.08 | [44] |
| HDPBA‒MWCNTs/CPE | SWASV | 120 | 20–10000 | 2.48 | 3.1 | 38.5 | ‒1.19 | Present work |
a
MCPE: modified carbon paste electrode; Cr: chromium(III) oxide; G/PANI: graphene polyaniline nanocomposite; Hg–Bi/SWNTs: Bimetallic Hg–Bi/single-walled carbon nanotubes composite.