Zeta potential and its applications.

This paper describes the concept of zeta potential, as well as the methods to perform such measurement. After presenting the origin of the electrical double-layer and relating the potentials associated to it, the physical bas es of the zeta potential determination are described. A special interest is made in the Doppler microelectrophoresis and in the electroacoustic determ ination. Finally, the more important applications of the measurement of the zeta potential in the field of the colloidal chemistry are pointed out.