气相色谱法测定样品中丁二醛的含量

Determination of Succinaldehyde Using Gas Chromatography

建立了以2,5-二甲氧基四氢呋喃为原料水解合成的丁二醛样品的气相色谱测定法。选用HPFFAP毛细管柱,柱温80℃,流速20 m L/min,以二氧六环为内标物,采用内标标准曲线法定量分析丁二醛含量。结果表明,方法在8.0-40.0 g/L的浓度范围内呈良好线性关系（r=0.999 94）,相对标准偏差RSD为0.52%,加标回收率在96.23%-102.87%之间。该法简便、快速,具有良好的精密度和准确度,可用于合成样品中丁二醛含量的测定。

A GC method was established for monitoring the succinaldehyde in the samples taking from the preparation reaction using 2,5-dimethoxy-dihydrofuran as the starting material. The content of succinaldehyde was quantitatively analyzed using internal standard curve method with a HP-FFAP capillary column and dioxane as internal standard substance. In this method, the flow rate was 20 m L/min and the column temperature was80℃. The results indicated that this method had a good linear relation（r=0.999 94） in a concentration range from8.0 g/L to 40.0 g/L with an average RSD of 0.52% and a recovery rate range from 96.2% to 102.8%. This method has been proved to be simple, rapid with good accuracy and reliability, which could be applicable in the monitoring of succinaldehyde in the samples taking from the preparation reaction using 2,5-dimethoxy-dihydrofuran as the starting material.