Table 2. A Comparison of This Work with Other Reports on the Detection of CCHa.
| Electrode | Technique | Sample | LoD (μM) | ref |
|---|---|---|---|---|
| MIM/GaAuNPs/GCE | DPV | pharmaceutical/human serum | 0.005 | (38) |
| MWCNTs/CPE | DPV | pharmaceutical | 0.008 | (39) |
| GSPEs | DPV | pharmaceutical | 0.01 | (31) |
| MWCNTs/GCE | DPV | pharmaceutical/urine | 0.015 | (40) |
| BDD | FIA | pharmaceutical/urine | 0.02 | (41) |
| PoPD/SWNTs/GCE | DPV | pharmaceutical | 0.03 | (42) |
| SPE | BIA | pharmaceutical | 0.1 | (43) |
| CB/PLA | DPV | pharmaceutical/urine | 0.1 | (44) |
| GCE | DPV | pharmaceutical | 0.2 | (45) |
| BDD | DPV | pharmaceutical | 0.3 | (32) |
| 40% CB in PP | SWV | tap, bottled, and river water | 0.01 | this work |
GSPEs: graphite-based screen-printed electrodes; CB: carbon black; PP: polypropyline; SPE: screen-printed electrode; GCE: glassy carbon electrode; PoPD/SWNTs/GCE: glassy carbon electrode modified with poly(o-phenylenediamine)/single-wall carbon nanotubes modified; CPE: carbon paste electrode; MWCNTs: multiwall carbon nanotubes; MIM/GaAuNPs/GCE: materials composed of graphene and gold nanoparticles and glassy carbon electrodes modified with molecularly printed membrane; PLA: polylactic acid; BDD: boron-doped diamond; CuO: copper oxide nanoparticules; CNF: carbon nanofiber composite; [Bim]FeCl4: 1-butyl-3-methylimidazolium tetrachloroferrate; DPV: differential pulse voltammetry; FIA: flow injection analysis; SWV: square wave voltammetry; BIA: batch injection analysis.