These separation mechanisms operate essentially in superposition along the length of a gel filtration column to which an axial electric field gradient has been added.
Additionally there are secondary chromatographic solute retention mechanisms.
[1][2] Capillary electrochromatography (CEC) is an electrochromatography technique in which the liquid mobile phase is driven through a capillary containing the chromatographic stationary phase by electroosmosis.
[3][4] It is a combination of high-performance liquid chromatography and capillary electrophoresis.
The capillaries is packed with HPLC stationary phase and a high voltage is applied to achieve separation is achieved by electrophoretic migration of the analyte and differential partitioning in the stationary phase.