| 微波辅助衍生化GC-MS法测定食用油中的脂肪酸 |
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| 引用本文： | 李攻科,何小青,张展霞.微波辅助衍生化GC-MS法测定食用油中的脂肪酸[J].分析试验室,2000,19(1):16-19. |
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| 作者姓名： | 李攻科 何小青 张展霞 |
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| 作者单位： | 中山大学化学系,广州,510275 |
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| 基金项目： | 广东省自然科学基金博士启动基金!（974078），教育部留学回国人员科研启动基金!（415409） |
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| 摘 要： | 利用微波技术，研究了用ＫＯＨ－甲醇，Ｈ２ＳＯ４－甲醇－甲苯、ＨＣｌ－甲醇等不同体系对食用油中的脂肪酸进行了衍生化，系统地比较了它们的优劣势，以及适合的分析对象，在１ｍｉｎ内完成衍生物生化反应，选用正庚烷代替传统方法的苯＋石油醚作为脂肪酸甲酯蝗提取剂，与传统消解及衍生化方法相比，具有节省溶剂，省时，易于操作等特点。
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| 关 键 词： | 微波辅助衍生化 食用油 脂肪酸 GC－MS |
Determination of Fatty Acids in Edible Oil by GC-MS using Microwave-Assisted Derivatization |
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| LI Gong-ke,HE Xiao-qing,ZHANG Zhan-xia.Determination of Fatty Acids in Edible Oil by GC-MS using Microwave-Assisted Derivatization[J].Chinese Journal of Analysis Laboratory,2000,19(1):16-19. |
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| Authors: | LI Gong-ke HE Xiao-qing ZHANG Zhan-xia |
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| Abstract: | A new and rapid microwave assisted derivatization method for the determination of fatty acids in edible oil by GC MS was developed. The optimum conditions for derivatization, such as the derivatization solvent composition, microwave assisted derivatization pressure and time were studied for KOH methanol and H 2SO 4 methanol systems. The experimental results were compared with those obtained by traditional method of normal temperature derivatization .The applied range of the two derivatization systems was also discussed in detail. The derivatization was accomplished in 1 minute. Heptane was used as extraction solvent. The method is rapid, efficient, accurate and solvent saving. |
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| Keywords: | Microwave assisted derivatization gas chromatography mass spectrometry edible oil fatty acids |
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