气相色谱法测定离子液体中间体中N-甲基咪唑残留量  

GC Determination of Residual Amount of N-Methylimidazole in Ionic Liquid Intermediates

作　　者：李继民[1] 王彦吉[2] 赵彦军[1] 邹宁[1] 

机构地区：[1]中国刑警学院法医系,沈阳110035 [2]中国人民公安大学,北京100038

出　　处：《理化检验（化学分册）》2010年第9期1052-1054,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：国家高技术产业发展项目(No.20012492)资助

摘　　要：采用气相色谱法对离子液体中间体中N-甲基咪唑残留量进行测定。以N,N-二甲基苯胺作为内标,采用DB-FFAP石英毛细管色谱柱（30 m×0.32 mm,0.25μm）分离,用氮磷检测器测定。N-甲基咪唑的质量浓度在0.02-0.140 g.L-1范围内与其峰面积呈线性关系,检出限（3S/N）为6.52 mg·L^-1,测定下限（10S/N）为21.73 mg·L^-1。在两个浓度水平作回收试验,平均回收率（n=5）分别为96.4%,96.2%,测定结果的相对标准偏差（n=5）为0.88%。Residual amount of N-methylimidazole in ionic liquid intermediates was determined by GC with nitrogen-phosphorus detector（NPD）.N,N-dimethylaniline was used as internal standard.The sample solution was separated on DB-FFAP capillary column（30 m×0.32 mm,0.25 μm）.Linear relationship between values of peak area and mass concentration of N-methylimidazole was obtained in the range of 0.02-0.140 g·L^-1,with values of limit of detection（3S/N） and lower limit of determination（10S/N） of 6.52 mg·L^-1 and 21.73 mg·L^-1,respectively.Test for recovery was made at two concentration levels,giving results of 96.4% and 96.2%.Value of RSD（n=5） found from the analytical results was 0.88%.

关 键 词：气相色谱法 N-甲基咪唑 离子液体中间体 

分 类 号：O657.7[理学—分析化学]