气相色谱法测定汽油中甲缩醛、碳酸二甲酯、乙酸仲丁酯  

Determination of methylal,dimethyl carbonate and sec-butyl acetate in gasoline by gas chromatography

作　　者：戎慧敏 邓可[2] 薛秋红[2] 周龙龙 白洁[1] 王静静[2] RONG Hui-min;DENG Ke;XUE Qiu-hong;ZHOU Long-long;BAI Jie;WANG Jing-jing(Insititute of Environment Science and engigeering Ocean University of China,Qingdao 266100;Teehnique Center of Shandong Exit-Entry Inspection and Quarantine Bureau of China, Qingdao 266500)

机构地区：[1]中国海洋大学环境科学与工程学院,青岛266100 [2]山东出入境检验检疫局检验检疫技术中心,青岛266500

出　　处：《分析试验室》2019年第1期47-51,共5页Chinese Journal of Analysis Laboratory

基　　金：山东出入境检验检疫局科研项目(SK2016011;SK2016041)资助

摘　　要：建立了采用阀切换和预分离柱的气相色谱法测定汽油中甲缩醛、乙酸仲丁酯、碳酸二甲酯含量的方法。结果表明,当柱温为60℃、阀切换时间0. 45 min时,各目标物含量在0. 2%～10. 0%范围内,线性相关系数均大于0. 9995。方法的加标回收率均90%～110%,相对标准偏差均小于1%,3种目标化合物的检出限分别为:甲缩醛0. 03%、碳酸二甲酯0. 02%、乙酸仲丁酯0. 3%。For the detection of illegal additions in gasoline,such as methylal,dimethyl carbonate and sec-butyl acetate,a test method was developed for the analysis of methylal,dimethyl carbonate and sec-butyl acetate in gasoline using a gas chromatography(GC)with valve switching and pre-column.The results showed that when the column temperature was 60℃ and the switching time was 0.45 min,the linear correlation coefficient of each target compound is higher than 0.9995 in the range of 0.2%to 10.0%.The method has recoveries of 90%-110% and relative standard deviations of less than1.0%.The detection limits of methylal dimethyl carbonate and sec-butyl acetate are 0.03%,0.02%,0.3%,respectively.

关 键 词：气相色谱 汽油 甲缩醛 碳酸二甲酯 乙酸仲丁酯 预分离柱 

分 类 号：TQ075[化学工程]