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The stage constants of cascade impactors

Author: Thomas T Mercer; Fission Product Inhalation Program.
Publisher: Albuquerque, New Mexico : Lovelace Foundation for Medical Education and Research, [1963]
Series: AEC research and development report.; Technical report archive and image library.; Lovelace Foundation for Medical Education and Research.; LF
Edition/Format:   Print book : EnglishView all editions and formats
Summary:
The particle size distributions which would be found on each stage of a cascade impactor when used to sample an aerosol having a lognormal mass distribution have been calculated. Three impactors, differing with respect to the collection characteristics of the various stages, were assumed. Samples were obtained from hypothetical aerosols having a wide range of distribution parameters. It is shown that for a  Read more...
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Details

Document Type: Book
All Authors / Contributors: Thomas T Mercer; Fission Product Inhalation Program.
OCLC Number: 908859457
Notes: Cover title.
"Atomic Energy Commission, Lovelace Foundation, Fission Product Inhalation Project."
"October 1963."
"Unclassified."
Description: 20 pages : illustrations ; 28 cm.
Details: Mode of access: World Wide Web.
Series Title: AEC research and development report.; Technical report archive and image library.; Lovelace Foundation for Medical Education and Research.; LF
Responsibility: by T.T. Mercer.

Abstract:

The particle size distributions which would be found on each stage of a cascade impactor when used to sample an aerosol having a lognormal mass distribution have been calculated. Three impactors, differing with respect to the collection characteristics of the various stages, were assumed. Samples were obtained from hypothetical aerosols having a wide range of distribution parameters. It is shown that for a particular aerosol the particle sizes appear to be log normally distributed on all stages and that the mass median diameter for a given stage, calculated from the number distribution on that stage, is a good estimate of the true mass median diameter for that stage. The true mass median diameters and true effective cut-off diameters for each stage and for each aerosol have been calculated also. The latter are shown to be superior for interpreting impactor data.

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