顶空-气相色谱法测定烟用胶粘剂中的挥发性有机物

采用顶空-气相色谱法对烟用胶粘剂中的挥发性有机物(甲醇、丙酮、乙酸甲酯、叔丁醇、乙酸乙烯酯、乙酸乙酯)进行分析,讨论了气相色谱柱的升温方式、顶空平衡温度、平衡时间、胶粘剂加入量对分析结果的影响,从而获得优化的检测工艺参数。该检测方法对上述6种挥发性有机物的线性范围分别为甲醇40～400μg/g,丙酮4～40μg/g,乙酸甲酯9.2～92μg/g,叔丁醇3.2～32μg/g,乙酸乙烯酯7.5～75μg/g,乙酸乙酯4.5～45μg/g,测定结果的相对标准偏差为0.6%～2.7%,样品的回收率为90.8%～104.2%。该方法可用于烟用胶粘剂中挥发性有机物的分析,方法简便、快速、重现性好。

Determination of Volatile Organic Compounds in Cigarette Adhesive by Headspace Gas Chromatography

The determination of volatile organic compounds(VOCs,including methanol,acetone,methyl acetate,tertiary butanol,vinyl acetate and ethyl acetate) in cigarette adhesive by headspace gas chromatography was investigated.The effects of temperature programming,equilibrium time,equilibrium temperature and quantity of the adhesive on the experimental results were discussed,and an optimal process variable for the determination of volatile organic compounds was ascertained.The results show that the linearity range of this method was 40~400 μg/g for methyl alcohol,4~40 μg/g for acetone,9.2~92 μg/g for methyl acetate,3.2~32 μg/g for tertiary butanol,7.5~75 μg/g for vinyl acetate and 4.5~45 μg/g for ethyl acetate,respectively.The relative standard deviations were 0.6%~2.7%,and the recovery was 90.8%~104.2%.This method of determining volatile organic compounds in cigarette adhesive is simple,quick and accurate.