Abstract
Abstract A set of equations is derived to describe mathematically the isotope distribution in the separation process of displacement chromatography. Emphasis is placed on nonsteady-state isotope accumulation in the boundary region of a migration band. The results indicate that the isotope profile in the migration band is expressed by where R, ε, k, R0, L, and x are local isotope fraction, separation coefficient, slope coefficient, original isotope fraction, migration length, and position in the band, respectively. Mathematical treatment is extended to the determination of HETP of experimental systems. The relation between the frontal isotope ratio r L and the migration length is also obtained. The validity of the derived equations is verified by using the reported experimental data on boron isotope separation by ion-exchange chromatography.
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