毛细管气相色谱法对乙二醇含量的测定  

Determination the Content of Ethylene Glycol by Capillary Gas Chromatography

作　　者：蒋春跃[1] 张玉[2] 孙志娟[2] 王秀祥[1] 

机构地区：[1]浙江工业大学化学工程学院,浙江杭州310014 [2]浙江工业大学海洋学院,浙江杭州310014

出　　处：《浙江化工》2016年第12期47-50,共4页Zhejiang Chemical Industry

基　　金：浙江省自然基金项目(LY12B06007);浙江省公益性技术应用研究计划项目(2012C21078);国家自然科学青年基金项目(21104046)

摘　　要：利用毛细管气相色谱法(GC)测定乙二醇含量。采用PEG-20M毛细管色谱柱,以1,3-丙二醇做内标物,分流进样,分流比20∶1,尾吹气流速20 mL/min,进样口温度260℃,柱温160℃,检测器为氢火焰离子检测器(FID)、检测器温度280℃。结果表明,乙二醇的质量浓度在0.468~2.332 mg/mL时,峰面积与内标峰面积比值与浓度之间线性关系良好,乙二醇的线性回归方程为Y=0.67891X-0.03926(R^2=0.99942)。采用此实验条件可快速准确地分析乙二醇的含量,为乙二醇的分析检测提供参考。To establish a method for determining ethylene glycol content by capillary gas chromatography. By using capillary chromatography column（PEG-20M）, 1, 3- propanediol as internal standard. The split injection was used with the split ratio of 100：1, and the make-up gas flow rate was 20 mL/min, the temperature of injection port was 260 ℃ and the temperature of column was 160 ℃. The detector was hydrogen flame ionization detector and its temperature was 280 ℃. The ratio of the ethylene glycol peak area and the internal standard peak area had a good linear relation with the concentration of the ethylene glycol in the range of0.468 -2.332 mg/mL. The linear equation of ethylene glycol was Y =0.67891X-0.03926（R-2=0.99942）. This method is simple, rapid, accurate to determine the content of ethylene glycol, which can provide the reference for the analysis of the ethylene glycol detection.

关 键 词：乙二醇 气相色谱法 PEG-20M 

分 类 号：TQ223.162[化学工程—有机化工] O657.71[理学—分析化学]