气相色谱法分析草酸二甲酯纯度方法改进研究  

Improvement of Gas Chromatography Method for Analyzing the Purity of Dimethyl Oxalate

作　　者：李继博 Li Jibo(China Energy Yulin Chemical Co.,Ltd.,Yulin Shaanxi 719300,China)

机构地区：[1]国能榆林化工有限公司,陕西榆林719300

出　　处：《山西化工》2024年第6期90-91,94,共3页Shanxi Chemical Industry

摘　　要：DMO国标分析方法采用毛细色谱柱进行分析,在国标方法使用过程中没有提到空白计算方法,使分析结果和实际样品有差别。在分析过程中由于仪器有细微差别,组分分离度不好,DMO出现过载现象,为了使各组分色谱峰出峰的有效分离,排除干扰,对柱流量和分流比及进样方式进行了改动,使各个组分有效分离,消除DMO因进样产生的过载现象。The DMO national standard analysis method uses capillary chromatography columns for analysis,and the blank calculation method is not mentioned during the use of the national standard method,resulting in differences between the analysis results and actual samples.During the analysis process,due to slight differences in instruments and poor component separation,DMO experienced overload.In order to effectively separate the peaks of each component's color spectrum and eliminate interference,changes were made to the column flow rate,split ratio,and injection method to effectively separate each component and eliminate the overload phenomenon caused by injection of DMO.

关 键 词：乙醇-DMO 分离度 色谱柱 有效分离 干扰 

分 类 号：O657.71[理学—分析化学]