Determination of airborne particle size distributions: Calculation of cross-sensitivity and discreteness effects in cascade impaction

Autor:	David F. S. Natusch, J.R. Wallace
Rok vydání:	1976
Předmět:	Polynomial Classical mechanics Distribution (mathematics) Impaction Cascade Chemistry Particle size Aerodynamics Mechanics Pollution Airborne particle Physics::Atmospheric and Oceanic Physics Aerosol
Zdroj:	Atmospheric Environment (1967). 10:315-324
ISSN:	0004-6981
DOI:	10.1016/0004-6981(76)90172-4
Popis:	A theory is developed which permits numerical evaluation of errors associated with the determination of aerosol size distributions using cascade impactors. Account is taken of errors due to the overlap of a given particle size between adjacent impaction stages and to the discrete nature of cascade impaction. The theory is applied to both log-normal and polynomial functional approximations to an aerosol size distribution. Numerical determination of errors considered shows that the mass of large and small particles present in the wings of a log-normal aerosol distribution is over-estimated manyfold by most cascade impactors but that the mass of particles having aerodynamic diameters close to the aerosol mass median diameter is generally subject to quite small (
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::80250f0c31a80cff7acb5684abde258c https://doi.org/10.1016/0004-6981(76)90172-4 Zobrazit plný text záznamu