冯了性风湿跌打药酒乙醇量测定不确定度评定

Evaluation of Uncertainty Measurement in the Assay of Fengliaoxing Fengshi Dieda Medicinal Wines

建立冯了性风湿跌打药酒中乙醇含量测定的不确定度评定方法。采用《中国药典》2005年版一部乙醇量测定法(气相色谱法)测定冯了性风湿跌打药酒中的乙醇含量,分析影响其不确定度的因素来源,评定了对照品纯度、体积、线性和峰面积等因素对冯了性风湿跌打药酒中乙醇量测定结果不确定度的影响。扩展不确定度为2%(v/v),置信水平为95%,覆盖因子为2。可作为气相法测定乙醇含量不确定度计算。

A method for evaluating uncertainty of Fengliaoxing Fengshi Dieda Medicinal Wines was established. The uncertainty originated from menthol in Fengliaoxing Fengshi Dieda Medicinal Wines was analyzed by ethyl alcohol content measuring method （GC） of ＂Chinese Pharmacopoeia＂. The influencing factors on the uncertainty were evaluated, including Standard material purity, Volume, Linearity, Peak area, etc. The expanded uncertainty U95 was 2% （v/v） （P=95%, k=2）. It can be used for evaluation of uncertainty measurement by GC.