The Measurement of the Size Distribution of Cigarette Mainstream Smoke by ELPI

摘要

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