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全烟气暴露下的卷烟烟气剂量测定

Determination of cigarette smoke dosimetry based on whole smoke exposure

  • 摘要: 为表征全烟气暴露体外试验条件下的实际卷烟烟气剂量,利用石英微量天平(QCM)和气相色谱-质谱联用(GC/MS)技术建立了基于全烟气暴露的卷烟烟气剂量测定方法。利用QCM技术对全烟气暴露模块内沉积的烟气颗粒物的累积质量浓度进行了实时测定,利用GC/MS技术分析了QCM表面捕集的烟气颗粒物中烟碱的浓度。结果表明:①QCM技术可用于全烟气暴露下体外试验的卷烟烟气剂量测定;②烟碱浓度的测定结果与烟气颗粒物质量浓度具有较好的相关性(R2>0.85),烟碱可以作为一种准确表征卷烟烟气剂量的化学标志物。

     

    Abstract: To accurately characterize the cigarette smoke dose in whole smoke exposure experiments, quartz crystal microbalance (QCM) and gas chromatography-mass spectrometer (GC/MS) were employed to determine cigarette smoke dosimetry based on whole smoke exposure. QCM was used to accurately measure the mass concentrations of smoke particulate matter deposited on the surface of QCM in a whole smoke exposure module in real time. The concentration of nicotine in the deposited particles was analyzed by GC/MS as a marker for key particulate phase components. The results indicated that:1) QCM technique could be applied to the determination of in vitro particulate dosimetry under whole smoke exposure situation; 2) the results of nicotine concentration was well correlated to the mass concentration of smoke particulate matter (R2>0.85), and nicotine could be selected as a chemical marker for accurate particulate phase smoke dose characterization.

     

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