Content Determination of Waishang Ruyi Ointments by GC / 中国中医药信息杂志

Objective To establish a method of GC for determination of Waishang Ruyi Ointments.Methods WAX PEG-20M capillary column was used.The column temperature was 140 ℃,the injection port temperature was 230 ℃,the detector temperature was 250 ℃,the flow rate was 1.0 mL/min.Results For Waishang Ruyi Ointments,the linear range was 0.513 8～5.138 mg,and the average recovery rate was 96.2% with RSD=1.0%.Conclusion The method is simple,easy-to-use,and can effectively control the quality of the ointments.