卷烟吸燃耗氧量影响因素

为研究卷烟设计参数、抽吸参数和燃烧速率对卷烟燃吸耗氧量的影响，采用吸烟机和顺磁氧气分析联用系统建立了卷烟吸燃耗氧量的测试方法，考察了不同抽吸条件下和不同设计参数的卷烟吸燃耗氧量变化，并研究了吸燃耗氧量与燃烧速率和烟气常规成分之间的相互关系。结果表明：(1)卷烟吸燃耗氧量随抽吸容量、抽吸持续时间、膨胀烟丝含量、再造烟叶丝含量、卷烟纸定量、卷烟纸钾钠比、卷烟纸填料含量和烟支圆周的增加而升高，随烟支单支质量、膨胀梗丝含量和卷烟纸透气度的增加而降低，随烟丝宽度和卷烟纸助燃剂含量的增加呈先升后降变化趋势。(2)卷烟吸燃耗氧量与卷烟吸燃速率、烟丝静燃速率和卷烟静燃速率显著正相关，与烟碱、TPM、焦油及抽吸口数显著负相关，与水分和CO无显著相关性。

Factors influencing oxygen consumption of a lit cigarette during puffing

In order to study the influences of cigarette design parameters, smoking parameters, and burn rate on the oxygen consumption of a lit cigarette under machine-smoking condition, a method for testing oxygen consumption of a burning cigarette was established by combining a smoking machine with paramagnetic oxygen analysis. The variations of oxygen consumption during smoking with different cigarette design parameters under different smoking conditions were investigated. The relationships between the oxygen consumption, the burn rate of cigarette, and the routine chemical components in mainstream cigarette smoke were studied. The results showed that: 1) The oxygen consumption of a burning cigarette increased with the increases of puffing volume, puffing duration, expanded cut tobacco content, reconstituted tobacco content, the grammage, potassium sodium ratio, and filler content of cigarette paper and cigarette circumference; while it decreased with the increases of tobacco weight, expanded stem content and the air permeability of cigarette paper, it also increased first and then decreased with the increases of cut tobacco width and the burn improver content in the cigarette paper. 2) The oxygen consumption of a burning cigarette significantly positively correlated to the cigarette's burn rate during puffing, the smouldering rates, and significantly negatively correlated to the contents of nicotine, TPM and tar in the mainstream smoke, and puffing number, did not significantly correlate to the contents of moisture and CO in the mainstream smoke.