卷烟及烟气中薄荷醇的毛细管气相色谱分析

建立了一种以无水乙醇为提取剂,茴香脑为内标,采用毛细管气相色谱定量测定卷烟烟丝和烟气中薄荷醇的方法,并采用该法测定了6种薄荷型卷烟嘴棒、烟丝、烟气粒相物和烟蒂中的薄荷醇含量。结果表明:①该法检测限为3.54~7.96ng/支,回收率在98.8%~101.8%之间,RSD<4%;②该法的测定结果与比色法没有明显差异;③剑桥滤片可以完全截留主流烟气中的薄荷醇;④用进入主流烟气中的薄荷醇量表征薄荷型卷烟的凉度大小,能更准确地反映薄荷型卷烟的感官特征。

Determination of menthol in cigarette and its smoke by capillary gas chromatography

Using ethanol as a solvent and anethole as an internal standard, a method for determining menthol in cigarette and its smoke by capillary gas chromatography was established. The menthol in cut tobacco, filter, total particulate matter and butt of six brands of mentholated cigarettes was determined by the method and compared with the resultsobtained by UV-Vis method. The results showed that: 1) the detection limits reached 3.54-7.96ng/cig., the recovery of menthol was from 98.8% to 101.8%, and RSD was below 4%; 2) there was no obvious difference between menthol contents determined by capillary gas chromatography and UV-Vis; 3) the menthol in mainstream cigarette smoke could be completely trapped by Cambridge filter pad; and 4) the sensory characteristic of mentholated cigarette could be reflected more exactly by the coolness characterized with menthol content in mainstream cigarette smoke.