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Table 1 Comparison of analytical performance of PVP-GR/GCE with other modified electrodes in the literature

From: Simultaneous and sensitive determination of ascorbic acid, dopamine and uric acid via an electrochemical sensor based on PVP-graphene composite

Modified electrode Technique Linear range/μM Detection limit/μM Reference
AA DA UA AA DA UA  
Pd/CNF-CPEa DPVi 50–4000 0.5–160 2.0–200 15.0 0.20 0.70 [11]
PGE-DAb DPV 25–500 1.0–20 2.5–30 13.0 0.11 1.40 [12]
MCNT/CCEc DPV 15–800 0.5–100 0.55–90 7.71 0.31 0.42 [13]
PrGO/MnO2/CCEd DPV 1–800 0.03–45 0.3–80 1.00 0.02 0.05 [20]
AuNPs-β-CD–GR/GCEe SWVj 30–2000 0.50–150 0.5–60 10 0.15 0.21 [21]
SGNF/IL/CS/GCEf DPV 30–350 0.05–240 0.12–260 14.8 0.04 0.10 [22]
GR-Pt/GCEg Amperometry 0.15–34.4 0.03–8.13 0.05–11.85 0.15 0.03 0.05 [23]
Trp-GR/GCEh DPV 200–12900 0.5–110 10–1000 10.09 0.29 1.24 [24]
PVP-GR/GCE SDLSV 4.0–1000 0.02–0.2;
0.2–100
0.04–1.0;
1.0–100
0.8 0.002 0.02 This work
  1. aPalladium nanoparticle-loaded carbon nanofibers modified carbon paste electrode
  2. bPyrolytic graphite electrode modified into dopamine solution
  3. cMWCNT modified carbon-ceramic electrode
  4. dPoly(3,4-ethylenedioxythiophene)/reduced graphene oxide/manganese dioxide modified glassy carbon electrode
  5. eGold nanoparticles-β-cyclodextrin-graphene-modified electrode
  6. fStacked graphene platelet nanofibers/ionic liquids/chitosan modified glassy carbon electrode
  7. gGraphene/size-selected Pt nanocomposites modified glassy carbon electrode
  8. hTryptophan functionalized graphene modified glassy carbon electrode
  9. iDifferential pulse voltammetry
  10. jSquare wave voltammetry