吹扫捕集-气相色谱/质谱测定烟支挥发性成分

Determination of volatile components in cigarette with purge and trap-gas chromatography-mass spectrometry

为了解不同卷烟挥发性成分的差异,研制了烟支挥发性成分吹扫捕集装置,通过优化吹扫捕集条件,建立了测定烟支挥发性成分的吹扫捕集-气相色谱/质谱方法,并对38个卷烟样品中检出的136种成分进行了离散度和层次聚类分析。结果表明:①在吹扫温度60℃、吹扫时间60 min、解吸温度190℃、吹扫流速45 mL/min条件下,实验结果较好;②在优化的吹扫捕集条件下,从1#样品中检出120种成分,其中101种成分的相对标准偏差(RSD)≤10%;③聚类分析显示,部分源于同一企业的样品较为相似,少数样品在叶组、香精香料和辅材使用方面具有明显的自身特色。

In order to investigate volatile components released from different cigarettes,a purging and trapping device was developed.By optimizing the purging and trapping conditions,a purge and trap-gas chromatography-mass spectrometry method for determining the volatile components was established.A dispersion and hierarchical cluster analysis of 136 components detected in 38 cigarette samples were performed.The results showed that:1)With purging temperature of 60℃,purging time of 60 min,desorption temperature of 190℃and purging velocity of 45 mL/min,the experimental results were satisfactory.2)Under the optimized purge and trap conditions,120 components were detected in sample 1#,and the relative standard deviations(RSDs)of 101 components were not higher than 10%.3)Cluster analysis indicated that some samples from the same manufacturer were more similar,and a few of cigarette samples had obvious characteristics in tobacco blend,flavor and auxiliary materials used.