Size separation of silica nanospheres by means of capillary zone electrophoresis.
The electrophoretic mobility of silica nanospheres was shown to be a function of separation conditions such as pH and phosphate concentration of a carrier electrolyte. The separation selectivity can be controlled by the separation conditions and optimised depending on the sample composition. The effects of pH and phosphate concentration of buffer solutions on the nanosphere electrophoretic mobility are explained using the Overbeek-Booth electrokinetic theory taking into account both electrophoretic retardation and the relaxation effect.
Vanifatova
Natalia G
NG
Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, Kosygin Str. 19, 117975 Moscow, Russia.
Spivakov
Boris Ya
BY
Mattusch
Juergen
J
Wennrich
Rainer
R