油脂中八种脂肪酸的分析测定  

Determination of 8 Kinds of Fatty Acids in Oils

作　　者：黄龙娣 郑建明[1] 姚维武 张丹青[1] 

机构地区：[1]江苏天瑞仪器股份有限公司,江苏昆山215300

出　　处：《广州化工》2011年第4期107-109,共3页GuangZhou Chemical Industry

摘　　要：油脂经氢氧化钾-甲醇溶液甲酯化后,生成的脂肪酸甲酯用DB-WAX毛细管柱进行分离,GC-FID进行检测。该方法的回收率在91.45%~107.55%,相对标准偏差小于8%,八种脂肪酸的检出限在0.29~1.10μg/mL之间。本方法准确度高,检出限低,能满足实际检测工作的需要。A method for the determination of 8 kinds of fatty acids in oils by GC-FID was developed.Fatty acids were methylated to fatty acid methyl ethers（FAMEs） by KOH in methanol.FAMEs were quantitatively measured by DB-WAX capillary gas chromatography.The recoveries of fatty acids ranged from 91.45%~107.55% with relative standard deviations less than 8%,and the detection limits were in the range of 0.29~1.10 μg/mL.With the high accurate and low detection limits,this method could be used in many laboratory detecting.

关 键 词：脂肪酸 气相色谱法 油脂 

分 类 号：TQ225.241[化学工程—有机化工]