Research Article
Simultaneous Voltammetric Determination of Ascorbic Acid, Paracetamol, and Caffeine Using Electrochemically Reduced Graphene-Oxide-Modified Electrode
Table 4
Results for AA, PA, and CA determination in pharmaceutical preparations and HPLC.
| | Pharmaceutical samples | Analytes | Labeled amounts (mg) | Methods | | DP-ASV | HPLC |
| | Panadol Extra | PA | 500 | 496 ± 30 | 490 ± 1 | | CA | 65 | 65.3 ± 0.8 | 65.8 ± 0.5 | | Hapacol Extra | PA | 500 | 498 ± 24 | 496.1 ± 0.9 | | CA | 65 | 64 ± 2 | 63.6 ± 0.1 | | Tatanol | PA | 500 | 494 ± 3 | 492 ± 2 | | CA | 65 | 64 ± 1 | 63.7 ± 0.2 |
| | Effe Paracetamol | AA | 200 | 194 ± 8 | 189 ± 1 | | PA | 200 | 201 ± 4 | 201 ± 2 | | Ameflu C | AA | 100 | 98 ± 6 | 96.1 ± 0.9 | | PA | 500 | 495 ± 5 | 494 ± 3 | | Efferalgan Vitamin C | AA | 200 | 197 ± 7 | 195 ± 2 | | PA | 330 | 331 ± 9 | 329 ± 4 |
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