Potentiel découlement, courant d'écoulement et conductance de surface aà l'interface eau-verrre

Electrokinetic potentials on glass walls have been measured using the methods of streaming potentials and streaming currents. Surface conductance has also been determined. KNO3, Ba(NO3)2 and La(NO3)3 were used as electrolytes. The results obtained have been interpreted considering a superficial gel layer, the thickness of which was estimated from the experimentally available parameters. This thickness has been found reasonably constant whatever the valency of the counter-ion and in agreement with values obtained from other techniques. The repartition of the specific charge between the gel and the liquid phase was also investigated. © 1970.SCOPUS: ar.j