采用光电离质谱法测定卷烟抽吸过程中烟气成分在人体呼吸道的截留.将烟气采样系统与光电离质谱相结合,通过取样毛细管的长度优化、烟气成分的光电离质谱图定性分析、吸入和呼出的流量数据优化,实现吸入和呼出烟气的直接采样和质谱检测,以计算卷烟抽吸过程中烟气成分的人体呼吸道截留率.结果表明,吸烟者经口腔循环抽吸卷烟时,烟气成分在人体呼吸道的截留率为55.7％～74.3％;经肺部循环抽吸卷烟时,烟气成分在人体呼吸道的截留率为77.6％～94.6％.该仪器方法操作简便快速,适用于吸入毒理学研究领域关于有害成分在人体呼吸道截留的评价研究.

[目的]为研究电池质量现状及分析其对气溶胶释放行为影响.[方法]选取38种小功率电子烟,对电池进行倍率放电性能测试和对电子烟进行抽吸测试.[结果](1)电子烟电池的倍率放电性能参差不齐,只有52.0％的烟弹式电子烟用电池经过400次倍率放电后容量保持率在80％以上,38.5％的一次性电子烟用电池无法正常倍率放电,测试过程中还出现了电池漏液、鼓包等异常情况;(2)1.2 A倍率放电特性能真实地反应电池的实际工作能力,决定一次性电子烟的抽吸口数,电池在实际工作中对气溶胶的释放量和气溶胶逐口释放稳定性影响不容忽视.[结论]需重视电子烟产品质量及其核心部件质量安全,尽早规范电子烟行业发展.

采用分子蒸馏技术对茉莉净油进行纯化分离获得轻组分Ⅰ和Ⅱ.采用气相色谱-质谱(GC-MS)法分析茉莉净油及其分子蒸馏各馏分的主要成分,共鉴定出66种挥发性致香成分.轻组分Ⅰ具有清新的茉莉花香,微有果香;轻组分Ⅱ有茉莉样的特征香气,但主要表现为果香香韵.两种组分在加热空白卷烟中具有各自独特的应用效果.

通过对广东地区卷烟消费者自然状态下吸烟行为的街头调查,分析其吸烟行为特点.结果显示,广东地区消费者的吸烟行为具有以下规律性:(1)消费者抽吸卷烟时,极少出现滤嘴通风孔被完全封闭的情形,而通风孔50％ 封闭的情形也不足34％.(2)局促环境下广东消费者单支烟的吸入烟气总量,会远高于其放松状态下的烟气吸入量.(3)街头调查结果验证了访谈调查数据可在一定程度上反映消费者的吸烟行为.(4)广东省内卷烟消费者的吸烟行为表现为"快(高抽吸频率)且浅(低抽吸容量)",其单支烟吸入烟气总量远远低于欧美消费者的.(5)马萨诸塞方法设定的机器抽吸卷烟条件与广东地区卷烟消费者的习惯性吸烟行为最为接近,而WHO官方方法则显著高估广东消费者烟气吸入量的平均水平.

In order to screen habitual smoking behavior of cigarette consumers in Guangdong Province, the behavior parameters from different smokers smoking different types of cigarettes were obtained via an in-situ smoking behavior recorder. The results showed that the smoking behavior of smokers had following patterns:1)A compensatory puffing behavior was noted in smokers who smoked unfamiliar cigarette samples, except for those who were used to smoke low tar cigarettes. 2)With the decrease in labelled tar delivery of their habitual cigarettes, both the puff number and puff volume took by the smokers were gradually reduced, and the total volume of smoke inhaled was decreased greatly for a single cigarette. Therefore the total volume of smoke inhaled by low tar cigarette smokers were found to be lower than that of medium/high tar cigarette smokers. 3)The smokers of low tar, low nicotine cigarettes and blended-type cigarettes had similar smoking behavior with less puff numbers, i.e., short puff durations, high flow rates and low puff volume; and the total volume of smoke inhaled by them for a single cigarette was lower. 4)There were differences in smoking behavior among different types of smokers, the total volume of smoke inhaled by female smokers, low age smokers and medium smoking degree smokers for a single cigarette total was among the lowest.

为了达到降焦减害、降低成本、调节感官值、增加填充率和燃烧性等效果,卷烟配方中通常会加入不同比例的再造烟叶[1].再造烟叶又可称为烟草薄片,它的概念早在1857年便有人提出,真正的制造则开始于20世纪的50年代[2].再造烟叶是指将打叶复烤和卷烟制造过程之中产生的部分不能满足卷烟工艺利用条件的烟草原料,例如烟梗、废弃烟末和一部分较低次的烟叶等,制成具有与烟草类似的薄片状的再生产物,用作卷烟的填充原料.将再造烟叶添加到卷烟里之后能够比较显著地减少烟气中的焦油和烟碱等有害成分[3].文章将就再造烟叶的生产方法、特性及作用进行归纳与探讨.