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不同类别添加剂在加热卷烟中的转移行为

Transfer behavior of different additives in heated tobacco products during storage and smoking

  • 摘要: 为了考察不同类别添加剂在加热卷烟再造烟叶生产环节的损耗、放置过程中向滤嘴的迁移和抽吸过程的转移等规律及差异,建立了一套适用于加热卷烟芯材、滤嘴和主流烟气中正构烷烃类、脂肪醇类、脂肪醛类和脂肪酮类化合物的GC-MS分析方法。按照正常生产条件,在芯材再造烟叶生产环节加入添加剂制备加热卷烟,分别测定了加热卷烟芯材、滤嘴和主流烟气粒相物中上述4类化合物的质量分数,分析了4类化合物在加热卷烟烟支中的持留和分布情况以及在抽吸过程中的转移行为。结果表明:①43种化合物在各种基质中的加标回收率在88.4%~110.9%之间,相对标准偏差在0~8.5%之间,绝大多数化合物的日内和日间RSDs均在10%以内。②对于同系物而言,随分子中碳链增长,化合物的整支持留率呈逐渐增大的趋势,而滤嘴迁移率逐渐降低,主流烟气粒相转移率和滤嘴截留率呈先增大后减小的趋势。③不同类别添加剂之间的整支持留率范围差别较大,其中,脂肪醇类最大,为12.4%~72.4%;脂肪酮类次之,为1.6%~51.3%;正构烷烃类最小,不同类别添加剂间整支持留率的差异主要与添加剂成分的沸点相关。④不同类别添加剂的滤嘴迁移率,除正构烷烃类化合物较低(8.8%~36.4%)外,其余3类基本分布在10%~90%之间,脂肪酮类添加剂的滤嘴迁移率最大,不同类别添加剂间滤嘴迁移率的差异主要与化合物官能团的活泼性和分子空间结构的稳定性有关。⑤除正构烷烃类外,其余3类化合物的主流烟气粒相转移率为0~30%左右,中、低沸点的脂肪醛类添加剂主流烟气粒相转移率较大。⑥不同类别添加剂之间的滤嘴截留率差别不大,醇类和酮类添加剂的滤嘴截留率略高于醛类,可能与脂肪醛类添加剂的挥发性较强有关。

     

    Abstract: In order to investigate the loss and transfer of different additives during the production process of reconstituted tobacco materials for heated tobacco products (HTPs), their migration to filter sections during storage, and their transfer during smoking, a set of GC-MS analysis methods suitable for n-alkanes, fatty alcohols, fatty aldehydes and fatty ketones in the tobacco sections, filters and mainstream smoke of HTPs were established. During production, additives were applied to the reconstituted tobacco materials to prepare the tobacco sections of HTPs. The mass fractions of four types of additives in the tobacco sections, filters and mainstream smoke particulate phases of HTPs were determined, and the retention and distribution of these additives in HTPs and their transfer behavior during smoking were analyzed. The results showed that: 1) The spiked recoveries of 43 compounds in various matrices ranged from 88.4% to 110.9%, the relative standard deviations ranged from 0 to 8.5%, and the intra- and inter-day RSDs were within 10% for most of the compounds. 2) For the homologues, as the carbon chain length in the molecules increased, the retention rates of the compounds in a whole HTP stick gradually increased, while their migration rates to the filter gradually decreased, and their transfer rates to the particulate phase of mainstream smoke and their retention rates in the filter first increased and then decreased. 3) The retention rates of different types of additives in a whole HTP stick were quite different, which mainly related to the boiling points of the additives. The retention rates of fatty alcohols (12.4%-72.4%) were the highest, followed by those of fatty ketones (1.6%-51.3%), with n-alkanes being the lowest. 4) The migration rates of different types of additives to the filter were generally distributed between 10% and 90%, except for n-alkanes (8.8%-36.4%). The aliphatic ketones had the highest filter migration rates. The differences in the filter migration rates of different types of additives were mainly related to the activity of their functional groups and stability molecular structures. 5) Except for n-alkanes, the transfer rates of the other three types of compounds to the particulate phase of the mainstream smoke were about 0-30%, and those of the fatty aldehyde additives with medium to low boiling points were greater. 6) The differences in the filter retention rates between the additives were small, the filter retention rates of alcoholic and ketone additives were slightly higher than those of aldehydes, which might be related to the high volatility of aldehyde additives.

     

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