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Measuring diffusion coefficients by Taylor's method of hydrodynamic stability
Author(s) -
Quinn J. A.,
Lin C. H.,
Anderson J. L.
Publication year - 1986
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690321213
Subject(s) - dilution , diffusion , taylor dispersion , taylor series , stability (learning theory) , work (physics) , range (aeronautics) , thermodynamics , chemistry , molecular diffusion , concentration gradient , chromatography , mathematics , materials science , mathematical analysis , physics , computer science , economics , composite material , metric (unit) , operations management , machine learning
Diffusion coefficients for liquid solutions can be measured using a hydrodynamic stability criterion first derived by G. I. Taylor. This method is used in the present work to determine diffusion coefficients for a range of solutes from small molecules to colloidal particles, at infinite dilution and at finite concentrations. The method is simple and accurate and seems to have wide applicability. Taylor's stability criterion can also be used to establish known, linear concentration gradients of several different solutes in one column of fluid, and one solute can be used to create a desired gradient of a second solute.