Analysis of an Over-the-counter Analgesic Pain Reliever
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| Columns: |
TSKgel ODS-80Ts QA, 5 µm,
4.6 mm ID × 15 cm
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| Mobile phase: |
50 mmol/L phosphate buffer, pH 2.5 2.5/ACN = 80/20 |
| Flow rate: |
1.0 mL/min
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| Detection: |
UV @ 254 nm |
| Temperature: |
40 °C |
| Injection vol.: |
5 µL |
| Samples: |
1. caffeine
2. salicylamide
3. acetylsalicylic |
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