气相色谱法测定复方水杨酸甲酯搽剂四组分的含量

目的：采用气相色谱法测定复方水杨酸甲酯四组分的含量。方法：用DB—WAXetr毛细管柱（0．32mm×30m，膜厚1．0μm），以氮气为载气，柱温：起始温度150℃，保持7min，然后以每分钟20oC的速率升至240℃，保持5min；氢火焰离子化检测器（FID），检测器温度为280℃；进样口温度为250℃。结果：各组分均能分离良好，方法学考察满足含量测定的要求。结论：方法简单、灵敏度高，可用于复方水杨酸甲酯搽剂四组分的含量测定。

Determination of Four Components in Compound Methyl Salicylate Liniment by GC

Objective： The purpose is to develop GC method for the assay of four components in Compound Methyl Salicylate Liniment. Methods： The test used DB-WAXetr capillary column（30 m ×0. 32 mm ×1.0 μm） ;carrier： nitrogen; Temperature ：at 150 ℃retains 7 rain, then from 150℃ to 240℃ at rate of 20℃ min ^-1, then retained 5min at 240℃ ; FID detector at 280℃ ; Injector at 250℃ Results： Any component had good linearity and recovery. Conclusions： The method is simple, sensitive and rapid, it can he applied to the content determination of Compound Methyl Salicylate Liniment.