长链脂肪酸是动植物体的基本组成之一,它有复杂而众多的异构体,至今发现的天然存在的脂肪酸已有三百多种。脂肪酸的气相色谱分离和定性定量分析已有大量的研究,普遍采用的方法是基于将脂肪酸转化成它的甲酯,再用GC—FID分离检测。为了克服众多异构体定性的困难,它们的保留指数和等价链长值已有很多研究。应用这 Long-chain fatty acids are one of the basic components of animals and plants. They have a complex and numerous isomers. More than 300 natural fatty acids have been discovered so far. There have been numerous studies on the gas chromatographic separation and qualitative and quantitative analysis of fatty acids. The commonly used method is based on the conversion of fatty acids to its methyl esters, followed by GC-FID separation. In order to overcome the difficulty of characterizing many isomers, much research has been done on their retention indices and equivalent chain lengths. Apply this