THE ELECTROPHORETIC MOBILITY OF HYDROCARBON PARTICLES IN KCL SOLUTIONS
LANGMUIR | AMER CHEMICAL SOC | Published : 1992
The electrophoretic mobilities of docosane particles in aqueous KCl solutions have been measured over the range 10-5 to 0.1 M. The measured mobilities are negative and vary with KCl concentration. Interpretation of the mobilities using the theory of O'Brien and White1 indicates that the magnitude of the electrokinetic surface charge, α, increases while the effective ζ potential decreases with electrolyte concentration. A mechanism giving rise to the effective surface charge via preferential solubilization of the Cl- ions in the interfacial region is postulated. © 1992, American Chemical Society. All rights reserved.