ON THE MECHANISM OF ADSORPTION OF A CATIONIC SURFACTANT ON QUARTZ

Experimental data on surface charge of quartz in dependence on concent ration of CTAB solution and pH were obtained using capillary electroki netic method. The results are compared with the developed theory of th e Langmuir-type adsorption that takes into account adsorption both on charged and noncharged surface centers. Computer optimization procedur e results in adsorption potential values -15 and -11 kT, respectively. A ratio between surface concentrations of the centers was also estima ted.