Method for analyzing fatty acid in grease

The invention discloses a method for analyzing fatty acid components in grease, and belongs to the technical field of food analysis and testing. According to the method, fatty acid in grease is converted into fatty acid methyl ester through derivatization treatment, gas chromatography is combined with a secondary electrospray ionization-ion mobility spectrometry technology, and two-dimensional separation information with retention time and migration time at the same time is provided. According to the method, no fragment ions are generated, the detection sensitivity is improved, and the analysis time is shortened. The method has the advantages of simplicity and convenience in operation, rapidness, stability, high sensitivity and the like, is simple in pretreatment and relatively low in detection cost, does not need a vacuum environment during working, and can well meet the requirement for efficiently and conveniently detecting the fatty acid in the grease product. 本发明公开了一种油脂中脂肪酸成分的分析方法，属于食品分析测试技术领域。该方法采用衍生化处理将