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| Titel: |
A Comparison of Cascade Impactor Data Reduction Methods |
| Auteur: |
O'Shaughnessy, Patrick T. Raabe, Otto G. |
| Verschenen in: |
Aerosol science and technology |
| Paginering: | Jaargang 37 (2003) nr. 2 pagina's 187-200 |
| Jaar: |
2003-02 |
| Inhoud: |
The mass median aerodynamic diameter, d g , and geometric standard deviation, σ g , of an aerosol is typically determined from a reduction of data obtained with a cascade impactor under the simplifying assumption that each stage of the impactor has an ideal collection efficiency. Two such reduction techniques are described and compared to an "inversion" method that incorporates the actual collection efficiencies of an impactor. Theoretical comparisons were made to demonstrate the difference in the estimate of d g and σ g between the 2 ideal reduction methods and the inversion technique. Results indicated that, in general, both d g and σ g are overestimated when the collection efficiencies are assumed to be ideal. A spreadsheet application of the inversion method is described. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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