提出了一种全气化顶空气相色谱法测定香精油中甲醇含量的方法,并考察了时间、温度、样品量对测定结果的影响。结果表明,在105℃和2 min条件下,<80 μL的样品接近全气化。该方法具有良好的精密度(RSD<3.89%)和准确度(加标回收率在97.8%~101%之间)。与传统方法相比,本方法操作简单,可批量检测液体香精香料中残留的甲醇。

A rapid method is proposed for determining methanol content in flavor fragrance oil by a total vaporization headspace gas chromatography.The influences of time,temperature and sample amount on the determination results are evaluated.Results show that the samples with a size less than 80 μL have near-completely been vaporized at 105℃ in 2 min.The present method shows a good precision (RSD<3.89%),and a good accuracy (the recovery ranges from 95.8% to 103%).The method is simple,rapid and sensitive,and suitable for the determination of methanol in flavor fragrance oil.

刘学琰(1996-),女,硕士生。