Aging and Hysteresis

Numerous systematic studies of the effect of aging on electrophoretic mobility have been carried out. No substantial difference between samples aged for 1-14 days was observed in [484]. Also, the difference in electrophoretic mobility 

4 Effect of Ionic Strength on the Numericae Value OF THE Potential 

In several studies, insignificant effects of ionic strength on electrophoretic mobility [66,382,504] and on the potential [83,144,323,325,393,413,505-507] were reported. The effect of ionic strength on the absolute value of the potential was insignificant in one sample of zirconia studied in [508], but two other samples behaved normally. 

Increasing the ionic strength from 0.01 to 0.1 M had a rather insignificant effect on the positive potentials of alumina and zirconia determined in [509] by the electroacoustic method. The absolute value of the negative potential was clearly depressed as the ionic strength increased, according to expectations. 

The potential of hematite reported in [510] was rather insensitive to the ionic strength on the basic branch, but the acidic branch showed normal behavior. 

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