假冒卷烟所用硫磺熏蒸烟叶的鉴定及探讨

Identification and Discussion of Sulfuring Tobacco leaf used for Counterfeit Cigarette

为了快速准确鉴定不法分子生产假冒卷烟所使用的熏硫烟叶,比较了熏硫烟叶和对比烟叶的外观及嗅觉特征,在定性分析的基础上,采用直接萃取-离子色谱法测定亚硫酸盐、光度比浊法测定了样品中的全硫。结果表明,熏硫烟叶金黄色中多透着青白色,有刺激性气味,pH较低,硫化铅斑法对照试验呈阳性,有较高含量的亚硫酸盐,全硫含量也明显偏高。

To investigate rapid and accurate methods to identify the sulfuring tobacco leaf used for counterfeit cigarettes,the sulfuring tobacco leaf was compared with the normal tobacco leaf in respects of appearance and olfactory characteristics,qualitative analysis,measurement of sulfite by ion chromatography and determination of sulfur by turbidimetry method.The results showed that the sulfuring tobacco leaf was golden yellow with little green white interlarded,had pungent odor,lower pH value and positive result by PbS spot method,more sulfite and sulfur than the normal tobacco leaf