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研究了棉油甲酯在碘的催化下发生异构化反应的规律。运用气质联用仪和紫外光谱对异构产物的成分进行了分析,根据不同浓度样品的紫外吸收曲线找出样品浓度与吸光度之间的线性关系,并与气质联用分析结果相结合,得出计算异构产物中共轭亚油酸含量的经验公式。
The isomerization reaction of cottonseed methyl ester catalyzed by iodine was studied. The composition of isomerization products was analyzed by gas chromatography-mass spectrometry and ultraviolet spectroscopy. The linear relationship between sample concentration and absorbance was found by UV absorption curves of different concentrations of samples, and the results were combined with the results of GC-MS analysis Empirical formula for calculating conjugated linoleic acid content in isomeric products.