ELPI设定条件对卷烟主流烟气气溶胶检测结果的影响  

Influences of ELPI conditions on test results of mainstream cigarette smoke aerosol

作　　者：孔浩辉[1] 吴君章[1] 沈光林[1] 

机构地区：[1]广东中烟工业有限责任公司

出　　处：《烟草科技》2016年第2期62-67,共6页Tobacco Science & Technology

基　　金：中国烟草总公司科技重点项目"烟气气溶胶分析技术及影响因素研究"(中烟办[2010]2号)

摘　　要：为准确测定卷烟主流烟气气溶胶的粒径分布,建立了＂分流＋轴向稀释器＋20倍射流稀释器＂的电子低压撞击器（ELPI）的配套稀释系统和相应的检测方法,并对19个不同焦油量（7.79~12.88 mg/支）的卷烟样品进行检测。结果表明：1采用该稀释系统,可满足ELPI分析仪在测定卷烟主流烟气气溶胶过程中对检测稳定性和仪器检测限的要求。2采用该ELPI方法检测卷烟烟气气溶胶时,测试时间对检测结果的影响较小,组间相对标准偏差（RSD）〈10%。3该方法的稳定性良好,气溶胶总质量检测结果的RSD〈15%。该方法准确、稳定和可靠,适用于不同焦油量卷烟样品烟气气溶胶颗粒的检测。In order to accurately determine the particle size distribution in mainstream cigarette smoke aerosol,a dilution system, which was composed of a diverter, an axial diluter and a 20 times jet-flow diluter, and the corresponding detection method for electrical low pressure impactor（ELPI） instrument were established. The experimental results indicated that： 1） The dilution system met the requirements of ELPI for detection stability and instrument detection limits in the determination of mainstream cigarette smoke aerosol. 2） The influence of test time on the test results was minor when detecting smoke aerosol with this ELPI-based method, and the inter-assay relative standard deviation（RSD） was less than 10%. 3） This method featured a good stability, and RSDs of determination results of total mass numbers of aerosol were less than 15%. This method was found to be accurate, stable, reliable and suitable for determining the aerosol particles in smoke of cigarettes with different tar deliveries.

关 键 词：卷烟 主流烟气 气溶胶 粒径分布 ELPI 稀释系统 

分 类 号：TS411.2[农业科学—烟草工业]