提出了测定电子烟烟液中乙醇、1,2-丙二醇、丙三醇、二甘醇、三甘醇、四甘醇和五甘醇等7种溶剂的气相色谱-质谱法(GC-MS)。电子烟烟液经甲醇稀释超声提取后,用DB-ALC1毛细管色谱柱(30 m×0.32 mm,1.8 μm)分离,并用GC-MS进行分析,以1,3-丁二醇为内标物,采用内标法定量。7种溶剂的质量浓度与其峰面积在一定范围内呈线性关系,方法的测定下限(10s)为1.1~5.0 mg·L-1。加标回收率在91.2%~107%之间,相对标准偏差(n=5)在1.2%~3.5%之间。

GC-MS was applied to the determination of ethanol, 1,2-propylene glycol, glycerol, diethylene glycol, triethylene glycol, tetraethylene-glycol and pentaethylene gylcol in electronic tobacco liquid. Electronic tobacco liquid was diluted and ultrasonic extracted with methanol, and the extract was separated on DB-ALC1 capillary column (30 m×0.32 mm, 1.8μm) and analyzed by GC-MS. Internal standard method was used for quantification, 1,3-butanediol as internal standard. Linear relationships between values of peak area and mass concentration were found in definite ranges. Values of lower limits of determination (10s) were found in the range of 1.1-5.0 mg·L-1. Values of recovery obtained by standard addition method were in the range of 91.2%-107%, with RSDs (n=5) in the range of 1.2%-3.5%.