Stage Response Calibration of the Mark III and Marple Personal Cascade Impactors

Experimental and correlated stage responses (the fraction of particles entering an impactor that are collected on a stage) are presented for the Andersen Mark III and Marple personal cascade impactors. The impactors were operated upright and fully assembled so that interstage interference and wall l...

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Bibliographic Details
Published in:Aerosol science and technology 1991-01, Vol.14 (3), p.365-379
Main Authors: Rader, Daniel J., Mondy, Lisa A., Brockmann, John E., Lucero, Daniel A., Rubow, Kenneth L.
Format: Article
Language:English
Subjects:
Chemistry
Colloidal state and disperse state
Emulsions. Microemulsions. Foams
Exact sciences and technology
General and physical chemistry
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Summary:Experimental and correlated stage responses (the fraction of particles entering an impactor that are collected on a stage) are presented for the Andersen Mark III and Marple personal cascade impactors. The impactors were operated upright and fully assembled so that interstage interference and wall losses could be properly studied. The observed stage responses showed maxima that fell significantly short of unity, meaning that a monodisperse aerosol is never collected exclusively on one stage, but is distributed among several stages and internal losses. Correlations for the stage responses are presented so that the experimental results can be used to determine size distributions with available data-inversion algorithms. Simulations with log-normal distributions show significant differences between d pa50 histograms and the more accurate distributions that result by taking the response functions into account.
ISSN:0278-6826
1521-7388
DOI:10.1080/02786829108959499