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Element values of Randles equivalent circuit at 1 KHz for three kinds of microelectrode sites.
| Microelectrode Site | Rs (KΩ) | Rct (MΩ) | Cdl (μF) |
|---|---|---|---|
| bare Au microelectrode site | 12.1 | 61 | 0.12 |
| AuNPs modified site | 17.3 | 4.6 | 0.78 |
| AuPt alloy modified site | 20.5 | 0.45 | 4.02 |
