Estimation of Particle Size Distributions Using Pipet-Withdrawal Centrifuges

Autor:	Timothy F. Dumm, Richard Hogg
Rok vydání:	1986
Předmět:	Estimation Centrifuge Chemistry Experimental data Mineralogy General Chemistry Condensed Matter Physics Alternative treatment Distribution (mathematics) Linearization Particle-size distribution Applied mathematics General Materials Science Particle size
Zdroj:	Particle & Particle Systems Characterization. 3:122-128
ISSN:	0934-0866
DOI:	10.1002/ppsc.19860030306
Popis:	The mathematical treatments used in the evaluation of particle size distribution from pipet-withdrawal centrifuge data are reviewed. An error in the published procedure for multiple-sample withdrawal systems is pointed out and a corrected formulation is presented. An alternative treatment, based on a piece-wise linearization of the size distribution is described. Computer simulations of the analytical and data evaluation procedures indicate that the errors in the original formulation are not generally serious and that the corrected and alternative procedures lead to very similar estimates. Except for some cases involving very narrow size distributions, the alternative approach appears to give slightly closer estimates of the size distribution. Comparisons based on actual experimental data are also described.
Databáze:	OpenAIRE
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