
%0 Journal Article
%A Johansen, PG 
%A Buckanan, AS 
%T An electrokinetic study by the straming potential method of ion exchange at oxide mineral surfaces
%J Australian Journal of Chemistry
%D 1957/12/01
%V 10
%N 4
%P 392-397
%K 
%R https://doi.org/10.1071/CH9570392
%U https://www.publish.csiro.au/paper/CH9570392 
%X The streaming potential method has been used to observe changes in the electrical double layer at the surfaces of the minerals Al2O3, SnO2, Fe2O3, and TiO2 in the presence of electrolytes. In addition to the normal effects of preferential physical adsorption of ions, ion exchange involving surface hydroxyl groups offers a useful hypothesis for explaining the results. Anion-exchange mechanisms appeared to be of particular importance in the reactions of phosphate, molybdate, and citrate with the oxide surfaces. In general for the particular samples used, Al2O3 and SnO2 (having basic surfaces) exhibited more pronounced anion exchange than Fe2O3 and TiO2 which had acidic surface. 
