Abstract
Particle fractionation is necessary to solve problems related to the determination of impurity speciation of natural waters, soils, and bottom sediments. It was shown earlier that rotating coiled columns are suitable for field-flow fractionation of particles in a transverse centrifugal field. However, the wide use of rotating coiled columns for separating particles in the substance analysis of natural materials is hampered by the progress of theoretical aspects of the method. In this work, a mathematical model is proposed to describe the behavior of solid particles in the carrier liquid flow in rotating coiled columns. The motion of particles in the flow of a carrier liquid and their migration along the column walls are considered. Equations relating the velocity, radius, and density of a particle; the density and viscosity of the carrier liquid; and the operational and construction parameters of the rotating column are derived. Some practical recommendations are made for the selection and optimization of fractionation conditions.
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Translated from Zhurnal Analiticheskoi Khimii, Vol. 60, No. 4, 2005, pp. 349–356.
Original Russian Text Copyright © 2005 by Fedotov, Kronrod, Kasatonova.
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Fedotov, P.S., Kronrod, V.A. & Kasatonova, O.N. Simulation of the motion of solid particles in the carrier liquid flow in a rotating coiled column. J Anal Chem 60, 310–316 (2005). https://doi.org/10.1007/s10809-005-0090-1
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DOI: https://doi.org/10.1007/s10809-005-0090-1