用气相色谱法测定皂用合成脂肪酸中正构二元酸含量

Determination of n-djbasic Acid Content in Soap-Making Synthetic Fatty Acid by GC

本文用气相色谱法,以OV-225为固定相成功地分离了皂用合成脂肪酸中正构一元酸(甲酯)与正构二元酸(甲酯),并以C_15,甲基酮为内标求出了C_9~C_16正构二元酸(甲酯)的相对重量校正因子,对皂用合成脂肪酸中正构二元酸进行了定性定量分析,其相对误差<±1.1%,相对标准偏差<±1.2%。

The content of dibasic acid in soap-making synthetic fatty acid is determined quantitatively by GC with OV-225 as fixed phase.The relative error of this method is<±l.l% and relative standard deviation <±1.2%.