total velocity of the analyte, \(\nu_{\text{tot}}\)

in capillary electrophoresis
The sum of electrophoretic velocity, \(\nu_{\text{ep}}\), of an ion and the electroosmotic velocity, \(\nu _{\text{eo}}\). \[\nu_{\text{tot}} = \nu_{\text{ep}}\,+\,\nu_{\text{eo}}\] This quantity can be measured experimentally as the effective length of the capillary divided by the migration time (\(L_{\text{eff}}/t_{\text{m}}\)).
  1. Depending on the signs and relative magnitudes of these velocities, the total velocity of an analyte can have either the same or the opposite direction to the electroosmotic velocity.
  2. The total velocity is the velocity of the ion measured as a displacement relative to the capillary wall divided by time.
PAC, 2004, 76, 443. 'Terminology for analytical capillary electromigration techniques (IUPAC Recommendations 2003)' on page 449 (