Calculation of electrophoretic mobilities in water–organic modifier mixtures in capillary electrophoresis

In order to correlate/predict electrophoretic mobility data in the mixture of water+organic modifier four equations have been presented and examined. The experimental mobilities of five analytes were determined in a water–methanol mixture. These data have been used to assess the accuracy and predictability of the models. Also, some previously published mobility data in water–organic modifier mixtures has been employed for further evaluation of the models. The models produced accurate results and the means of percentage deviations were in the range of 0.66–1.30.