油脂中脂肪酸分析前处理酯交换法的研究

Study of Fatty Acid Analysis in Oils and Fats by Pretreatment Ester Exchange Method

本文对酯交换法加以优化,通过增加油样和氢氧化钾甲醇等试剂添加量,以提高样品浓度的方法来解决国家标准方法响应值偏低、结果不精确的问题。经实验表明,该方法重现性好、误差小,低于国家标准规定范围,具有可行性、精确性、可操作性。

In this paper, the transesterification method was optimized, and the oil sample and potassium hydroxide methanol and other reagents were added to increase the concentration of the sample to solve the problem of low response value and inaccurate results of the national standard method. The experiment showed that the method had good reproducibility, small error, lower than the national standard range, and had feasibility, accuracy and operability.