Abstract
Composite sensor-based carbon paste electrode (CPE) was modified with gold nanoparticles and polymelamine (AuNPs/PM/CPE) via electropolymerization and electrodeposition. The AuNPs/PM/CPE was used to investigate simultaneous dopamine, ascorbic acid, and uric acid. The surface morphology of AuNPs/PM/CPE was observed using scanning electron microscopy (SEM). The electrochemical behavior was investigated using the cyclic voltammetry (CV) technique. The AuNPs/PM/CPE shows higher electrochemical activities and has a large effective surface area compared with CPE, PM/CPE, and AuNPs/CPE. Under the optimum conditions for simultaneous analysis, the AuNPs/PM/CPE exhibit a linear voltammetric response and detection of limits of calculated 0.817 µM, 0.246 µM, and 1.233 µM for dopamine, ascorbic acid, and uric acid. The AuNPs/PM/CPE presented selective sensors in the simultaneous of dopamine, ascorbic acid, and uric acid. The modified electrode was successfully applied and analyzed in the real sample of human urine and obtained satisfactory recovery.
| Original language | English |
|---|---|
| Pages (from-to) | 1377-1386 |
| Number of pages | 10 |
| Journal | Rasayan Journal of Chemistry |
| Volume | 17 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1 Jul 2024 |
Keywords
- Ascorbic Acid
- Dopamine
- Gold Nanoparticles
- Polymelamine
- Simultaneous
- Uric Acid
- Voltametric Sensor