10th International Aerosol Conference September 2 - September 7, 2018 America's Center Convention Complex St. Louis, Missouri, USA
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Particle Size Distribution of Indoor Aerosols, Natural and Artificial
HYAM KHALAF, Mostafa Mostafa, Mikhail Zhukovsky, Ural Federal University
Abstract Number: 25 Working Group: Indoor Aerosols
Abstract Size distribution of inhalable aerosols is the most significant factor to predict aerosol deposition yield at various respiratory tract locations in human. Recently, electronic cigarette (EC), as the alternative of tobacco cigarette, is increasingly popular all over the world. However emissions from ECs may contribute to both indoor and outdoor air pollution and the number of users is increasing rapidly. In this investigation, mainstream aerosols generated from electronic cigarette were characterized in terms of particle number concentrations and size distributions by using diffusion aerosol spectrometer (DAS). DAS can be assessing in the range from 10-3 μm to 10 μm. Maximum number concentration of injected aerosol particles around 4x104 particles/cm3, most of these particle concentrations within the ultra fine particles (UFP) size range (0 to 0.2 μm) and the other in the size range from 0.3 to 1 µm. With time, the size mode of the particle number is less than 0.2 μm (UFP). The mass and the surface size distributions is presented and compared with bi-modal distribution.