烟草中含有如尼古丁、蛋白质、纤维素、精油类等多种天然化学物质,其中很多物质对人体有害,此外,烟草中还含有很多致癌及促癌物质,如亚硝胺、甲醛等,以及已经得到鉴定的40多种生物碱和能削弱机体排出异物能力的纤毛毒物质。尼古丁作为烟草以及卷烟的重要成分,约占烟草生物碱总量的95%,其是衡量烟草以及卷烟质量的关键指标。基于此,本文主要以GC法为基础测量烟草中尼古丁的含量。 Tobacco contains a variety of natural chemicals such as nicotine, protein, cellulose, essential oils, many of which are harmful to humans. In addition, tobacco also contains many carcinogenic and carcinogenic substances, such as nitrosamines, formaldehyde, etc., as well as More than 40 alkaloids identified and ciliary toxic substances that impair the ability of the body to excrete foreign bodies. As an important component of tobacco and cigarettes, nicotine, accounting for about 95% of the total amount of tobacco alkaloids, is a key indicator of the quality of tobacco and cigarettes. Based on this, this paper mainly based on the GC method to measure the content of nicotine in tobacco.