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研究了酶法制备生物柴油中各种脂肪甲酯的气相色谱快速定性定量测定方法。实验采用Agilent-INNOWAX毛细管色谱柱,以十七烷酸甲酯为内标,程序升温测定生物柴油中主要脂肪酸甲酯,建立了一种简单、快速、准确的方法。各种脂肪酸甲酯的回收率在97.53%~99.67%之间,标准偏差为0.0011~0.0085,变异系数为0.46%~1.60%(n=6)。
A rapid qualitative and quantitative method for the determination of various fatty methyl esters in biodiesel by gas chromatography was studied. The experiment used Agilent-INNOWAX capillary column with methyl heptadecanoate as internal standard to establish a simple, rapid and accurate method for the determination of methyl ester of fatty acid in biodiesel by temperature programmed. The recoveries of various fatty acid methyl esters ranged from 97.53% to 99.67% with a standard deviation of 0.0011 to 0.0085 and a coefficient of variation of 0.46% to 1.60% (n = 6).