Abstract
Monodisperse test aerosols with high number concentrations are widely used in different fields of aerosol physics and as a diagnostic tool in medicine (inhalation experiments). For example, in combination with light scattering photometers the total deposition of aerosol particles in the human respiratory tract can be estimated as well as gas mixing processes and deposition mechanisms inside the airways can be studied (Gebhart et al. 1988). Using the principle of Sinclair and La Mer (condensation of supersaturated vapour onto externally produced condensation nuclei) the generation of aerosols with such definite properties can be achieved. This principle also offers the adjustment of the generated particle size by changing the operation conditions. A new condensation-type aerosol generator was designed to produce high concentrated and highly monodisperse particles (geometric standard deviation, σg, lower than 1.15 according to the VDI-guideline) in the size range from about 0.1 to 7μm geometric diameter for the aerosol substance di-2-ethylhexyl sebacate (DEHS). A special quality of this instrument is its possibility to rapidly adjust the particle size as well as their number concentration. The object of this work is to describe the new technical set-up and experimental results characterizing the produced aerosol and the features of this instrument.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
