*色谱分析usp monograph – paracetamol/aspirin/caffeine
conditions
column: ace ultracore 2.5 superc18
dimensions: 50 x 4.6 mm
part number: core-25a-0546
mobile phase: h2o with glacial acetic acid(69:3)/meoh (72:28 v/v)
flow rate: 2 ml/min
injection: 2.5 μl
temperature: 45 °c
detection: uv, 275 nm
analytes
1. paracetamol
2. caffeine
3. aspirin
4. benzoic acid
5. salicylic acid