Method for measuring free ibuprofen in arginine ibuprofen by virtue of high-performance liquid chromatography
A technology of high performance liquid chromatography and determination method, which is applied in the field of high performance liquid chromatography determination of free ibuprofen in argininoprofen, can solve problems such as inaccuracy and low specificity, and achieves reduction of sample decomposition and optimization of high efficiency Liquid chromatography conditions, the effect of ensuring reliability
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[0021] A high performance liquid chromatography method for the determination of free ibuprofen in argininoprofen is carried out according to the following steps:
[0022] 1) High performance liquid chromatography conditions: high performance liquid chromatography, Shimadzu LC-20AT, liquid chromatography conditions: C18 column (4.6mm×250mm, 5um), column temperature 30℃, ultraviolet detector, detection wavelength 220nm; flow Phase: methanol: water (containing 2% H3PO4, pH=2.5)=75:25, flow rate: 1.0ml / min
[0023] 2) Preparation of the test solution: Weigh 1g of argininoprofen sample, add 20ml of chloroform, extract with magnetic stirring for 10min, filter out the chloroform, and repeat the extraction twice with 20ml of chloroform on the filter residue, and combine the trichloromethane Methane extraction solution, the filtrate was evaporated to dryness in a 50°C water bath under reduced pressure, and chloroform was recovered. The residue obtained after concentration was dissolved in m...
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