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M. A. Statkus, G. I. Tsysin
Mathematical modeling of sorption
preconcentration in flow analysis systems
Abstract
Description of the
whole sorption preconcentration step was proposed based on a system of equations
comprising equations of mass balance, external diffusion mass transfer and
equilibrium distribution of analyte. Description of sorption step allows to
calculate analyte distribution across the column length. This distribution can
be used as an initial condition for describing desorption step. A scheme for
numerical calculations was developed using Comsol software. A scheme for
iteration search of model parameters was proposed, based on minimization of
difference between experimental and calculated curves, was proposed. A
procedure for evaluating confidence intervals of model physicochemical
parameters based on dispersion of experimental data was proposed.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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