气相色谱法分析检验液化石油气中甲缩醛

Determination of Methylal in LPG by Gas Chromatography

建立了用毛细管色谱法定量检验液化石油气中甲缩醛的方法。在优化色谱定性条件的基础上,采用切换液体阀进样,外标法定量。实验结果表明：甲缩醛在0.1%－50%（m/m）范围内的线性关系良好,加标回收率在96.0%－102.8%之间。

A determination method of methylal in Liquefied Petroleum Gas（ LPG） was developed by capillary column gas chromatography. Under the optimal chromatography conditions,methylal can be analyzed by switching the liquid valve inlet and quantified by external standard method. The results showed that methylal had the good linear relationship in the range of 0. 1% －50%（ m /m） and the recoveries ranged from 96. 0% －102. 8%.