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为分析电子烟烟液中的挥发性成分,通过考察采样方式,提取、解析条件和NT解析率等,建立了动态捕集针-气相色谱/质谱联用(NT-GC/MS)的测定方法,并采用该方法测定了4种不同口味电子烟烟液中的挥发性成分.结果表明:①采用加热密闭循环、浸入式吹扫的方法,在流速7 mL/min、50℃条件下提取,并在250℃下解析时,实验效果最佳.②以电子烟烟液A为例,采用NT法提取后鉴定的化合物为31种,组分峰面积相对标准偏差(RSD)的平均值为5.37%(n=5);而采用SPME法提取后鉴定的化合物为25种,组分峰面积RSD的平均值为8.59%(n=5);③4种不同口味电子烟烟液中的主要香味成分分别为2,3,5-三甲基吡嗪、桃醛、苯甲醇和茉莉酮,均为彰显其口味特征的香味物质.该方法重复性好、精密度高,适用于不同电子烟烟液中挥发性成分的快速分析.“,”For analyzing the volatile components in e-liquids, a NT-GC/MS method was developed by optimizing sampling methods, extraction and desorption conditions. Four types of e-liquids were tested with the developed method. The results indicated that: 1) The optimum pretreatment conditions were extraction at a constant current pump velocity 7 mL/min at 50 ℃ and desorption at 250 ℃ by heating closed cycle purging NT with a blowing needle. 2) 31 compounds were identified in e-liquid sample A by NT-GC/MS; the average relative standard deviation of components’peak areas was 5.37% for 5 repeated tests of sample A. 25 compounds were identified in sample A by SPME-GC/MS; the average relative standard deviation of components’ peak areas was 8.59% for 5 repeated tests of sample A. 3) The most important aroma substances in the four different e-liquids were 2,3,5-trimethylpyrazine, peachlactone, benzylalcohol and cis-jasmone, because they played an important role in demonstrating the aroma characteristic of an e-cigarette. This method features a high sensitivity and good repeatability, it is suitable for the rapid analysis of volatile components in e-liquids.