烟用香精挥发性成分总量检测的影响因素

Factors Influencing Determination of Total Volatile Components in Tobacco Flavors

为研究影响烟用香精挥发性成分总量检测结果的因素,在4家实验室分别测试了6种性状不同的表香和料液样品的挥发性成分总量,考察了蒸发皿规格、水浴锅沸腾状态和加热水位,以及通风条件对测试结果的影响。结果表明:蒸发皿的规格对烟用香精挥发性成分总量测试结果的影响较为明显,而加热水位、沸腾状态和通风条件的影响较小;测试条件对挥发性较强、均匀透明的表香样品的测试结果的重复性与重现性的影响小,而对挥发性较低、粘稠非均匀样品的影响较大。烟用香精样品的性状、测试仪器和操作条件都不同程度地影响其挥发性成分总量的测试结果。

In order to investigate the factors influencing the determination of total volatile components in tobacco flavor, 6 tobacco flavor samples including top flavors and casings were measured in 4 laboratories, the factors involved were specifications of evaporating dish, boiling state and water level in water bath, and ventilation condition. The results showed that the specifications of evaporating dish affected test results obviously, while boiling state, water level and ventilation condition did not. Test results＇ repeatability and reproducibility of transparent, homogeneous and highly volatile top flavors were less susceptible to test conditions, comparing with viscous and inhomogeneous low volatile casings. The conclusion is that the property of flavor sample, instrument and test operation all affected the test results of total volatile components though at different extent.