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Comparison of anodic peak current repeatability for biochar/SPE and graphene/SPE sensors for different electrochemical substrates (RSD% = standard deviation/µA, n = 5).
| Biochar/SPE RSD% |
Graphene/SPE RSD% |
|
|---|---|---|
| Ascorbic acid | 13 | 2 |
| Uric acid | 13 | 6 |
| Benzoquinone | 12 | 2 |
| Epinephrine | 12 | 1 |
| Ferrcyanide | 12 | 4 |
