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采用 HPL C法同时测定复方苯甲酸酊中苯甲酸和水杨酸含量。以十八烷基硅烷键合硅胶柱 ,0 .0 2 m ol/L磷酸二氢钾溶液 ( 0 .1m ol/L氢氧化钠溶液调节 p H 6.1) -甲醇 ( 80∶ 2 0 )为流动相。两种成分分离度高。并用此法进行稳定性研究 ,结果满意。
Simultaneous Determination of Benzoic Acid and Salicylic Acid in Compound Benzoic Acid Tincture by HPL C Method. To octadecylsilane bonded silica gel column, 0. 02mol / L potassium dihydrogen phosphate solution (0.1mol / L sodium hydroxide solution to adjust pH 6.1) - methanol (80: 20) as the flow phase. High separation of the two components. And using this method to study the stability, the results are satisfactory.