R.J. Reynolds Tobacco Company, Bowman Gray Technical Center, P.O. Box 1487, Winston-Salem, NC 27102, USA.
Regul Toxicol Pharmacol. 2012 Oct;64(1):35-42. doi: 10.1016/j.yrtph.2012.05.011. Epub 2012 Jun 7.
A survey of selected mainstream smoke constituents from commercially marketed US cigarettes was conducted in 2009. The US cigarette market was segmented into thirteen (13) strata based on Cambridge Filter Method (CFM) "tar" category and cigarette design parameters. Menthol and non-menthol cigarettes were included. Sixty-one (61) cigarette brand styles were chosen to represent the market. Another thirty-four (34) brand styles of interest were included in the survey along with a Kentucky 3R4F reference cigarette. Twenty mainstream smoke constituents were evaluated using the Health Canada smoking regimen. By weighting the results of the 61 brand styles using the number of brand styles represented by each stratum, the mainstream smoke constituent means and medians of the US cigarette market were estimated. For nicotine, catechol, hydroquinone, benzo(a)pyrene and formaldehyde the mean yields increased with increasing "tar" yields. Constituent yields for the ultra-low "tar" and low "tar" cigarettes were not significantly different for most other analytes as ventilation blocking defeated any filter air dilution design features. In contrast, normalization per mg nicotine provided an inverse ranking of cigarette yields per CFM "tar" categories. Menthol cigarette mean constituent yields were observed to be within the range of the non-menthol cigarettes of similar "tar" categories.
2009 年对美国市场销售的部分主流烟气成分进行了调查。根据剑桥过滤法（CFM）“焦油”类别和香烟设计参数，将美国香烟市场分为 13 个层次。包括薄荷醇和非薄荷醇香烟。选择了 61 种香烟品牌风格来代表市场。调查还包括 34 种其他感兴趣的品牌风格以及肯塔基州 3R4F 参考香烟。使用加拿大卫生部吸烟方案评估了 20 种主流烟气成分。通过使用每个层次代表的品牌风格数量对 61 种品牌风格的结果进行加权，估算了美国香烟市场主流烟气成分的平均值和中位数。对于尼古丁、儿茶酚、对苯二酚、苯并（a）芘和甲醛，随着“焦油”产量的增加，平均产量增加。对于大多数其他分析物，超低“焦油”和低“焦油”香烟的成分产量没有明显差异，因为通风堵塞了任何过滤空气稀释设计功能。相比之下，每毫克尼古丁的归一化提供了按 CFM“焦油”类别划分的香烟产量的倒数排名。薄荷醇香烟的平均成分产量被观察到与类似“焦油”类别的非薄荷醇香烟的范围相吻合。
