【摘要】 本文提出了一种按指数程序涂渍的气相色谱柱测定油脂脂肪酸的方法。实验表明,以DEGS为固定液,液载比按y=2.05×14~2变化的四段2m指数柱的柱效、塔板高度、硬脂肪酸甲酯与油酸甲酯的分离度及分析菜籽油所需的时间,均比液载比为5.0%的2m均匀柱优越。说明此法更适于对油脂。特别是含高碳数脂肪酸的油脂进行分析。更多还原

【Abstract】 A method of determination of fatty acid in fat by exponentially loaded gas chromatographic column has been developed. The exponentially loaded column is 2 meters long and consists of 4 sections in which DEGS is used as stationary liquid, and the liquidcarrier ratio varies with Y=2.05×14~i. In respect of the column efficiency, plate height, resolution between methyl stearate and methyl oleate, and time required in analysing rape seed oil, the column is more superior to the 2—meter uniform column of which the liquid-carrier ratio is 5%. It has been demonstra’ted that the method is suitable for the analysis of fat, especially of the fat containing long chain fatty acid.更多还原