Partition height-equivalent theoretical plate

These successive equilibria are the basis for the static model for which the column length L is partitioned into N theoretical plates numbered from 1 to N, all with the same height. For each of these plates, the concentration of analyte in the mobile phase is in equilibrium with the main concentration of analyte in the stationary phase. The height equivalent to a theoretical plate (HETP or II) is thus given by equation (1.5) ... 

The concept of plate theory was originally proposed for the performance of distillation columns (12). However, Martin and Synge (13) first applied the plate theory to partition chromatography. The theory assumes that the column is divided into a number of zones called theoretical plates. One determines the zone thickness or height equivalent to a theoretical plate (HETP) by assuming that there is perfect equilibrium between the gas and liquid phases within each plate. The resulting behavior of the plate column is calculated on the assumption that the distribution coefficient remains unaffected by the presence of other... 

Mass transfer resistance. (Fig. 2c) The migration of the solute molecules from the mobile phase to the stationary phase and vice versa is not instantaneous, and it prevents the existence of true partition equilibrium. The corresponding contribution to the height equivalent to a theoretical plate, for the mass transfer resistance in mobile phase, and for the mass transfer resistance in stationary phase, depends... 

Hatta number, dimensionless height equivalent to a theoretical plate or stage, m height of a transfer unif, m elecfrical currenf, A wafer flux, m /m s fhermal conducfivify, J/m s K k ky, ky mass fransfer coeffidenf, various unifs elimination rafe consfanf, s reaction rafe consfanf, s partition coefficienf, various unifs permeabilify, m/s or m ... 

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