Electrophoretic Mobility

The electrophoretic mobility (µ_e) describes the ability of a component to migrate. The electrophoretic mobility (equation 6.1) of an object in an applied electric field is determined by the charge on the molecule divided by the frictional coefficient (f). Stokes' Law  gives the frictional coefficient of the molecule (f). This value is dependent on size and shape of the molecule as well as the viscosity of the solvent(η).

The velocity of the particle in an applied field is described by equation 6.3. The variable E is the applied electric field. The velocity describes the rate at which the components are moving through the capillary.