tThe effects of sodium chloride and potassium chloride electrolytes on adsorption and micelle formationof three amphiphilic ionic liquids (ILs), 1-alkyl-3-methylimidazolium chloride, [Cnmim][Cl], n = 6, 7 and8, at the toluene-water interface were investigated. Temperature was fixed at 298.2 K. Due to interfaceactivity, the used ILs significantly reduce the interfacial tension and in the order of their alkyl chainlength. The presence of electrolytes results in the salting out effects and intensifies reducing the interfa-cial tension and micelle concentrations of ILs. To fit experimental data, the Frumkin adsorption isothermwas satisfactorily applied below the critical micelle concentrations of the ILs. As a result, the adsorptionparameters including adsorption tendency and saturated interface excess rise to higher levels and theelectrostatic repulsion between the adsorbed IL molecules declines in the presence of electrolytes; how-ever, the variations are more significant with sodium chloride because of smaller and more hydratedcation.
