The Measurement of the Size Distribution of Cigarette Mainstream Smoke by ELPI
Cigarette smoke is a type of aerosol, there are the links between deposition in the respiratory tract of smokers and the physical properties of the aerosol, most notably the particle size distribution of the smoke aerosol. In order to study the number size distribution of fresh mainstream smoke, the modified smoke machine was connected with Electrical Low Pressure Impactor (ELPI). The different impactor collection substrates material （polycarbonate ，Al foil， sintered plate） and the dilution system were selected for measurement of the number size distribution of mainstream according to standard smoke condition. The results showed that the impactor collection substrates in ELPI had effect on the measurement of the number size distribution of mainstream. The count mean diameter of particle for the three different impactor collection substrates was: PC<Al foil< sintered plate. The main effect of the impactor collection substrates on the size distribution of mainstream was in the 0.01-0.1μm. The impactor collection plate with grease reduced the loss of 0.01-0.1μm particles. The surface property of sintered plate could reduce the loss of particle bounce and diffusion on the surface of impactor collection substrate. The dilution method and dilution ratio also has effect on the number size distribution of mainstream. The increase of dilution ration led to the decrease of count mean diameter. Profile of size distribution was changed by the dilution ration.
aerosol ELPI dilution number size distribution
Yong Jin Shitai Wang Jinyun Liu Ke Li Hongmei Fan Haifeng Tan Xinliang Tan Xinliang Tan
China Tobacco Hunan Industrial Co.,Ltd.,Technonlgy Center NO.426 Laodong Road,Changsha,Hunan,410007,P.R. China
国际会议
西安
英文
764-771
2011-08-17（万方平台首次上网日期，不代表论文的发表时间）