Adsorption of cystine at mercury/ aqueous solution of chlorate (VII) interface in solutions of different water activity

Agnieszka Nosal-Wiercińska
2012 Open Chemistry  
© Versita Sp. z o.o. Adsorption of cystine on mercury electrode from 1 to 8 mol dm -3 chlorates (VII) was studied. The data obtained from the measurements of differential capacity of the double layer were used, namely the measurements of zero charge potential and surface tension at the zero charge potential. The values of the relative surface excess increase along with the chlorate (VII) and cystine concentrations. The adsorption parameters were obtained from Frumkin and virial isotherms. The
more » ... al isotherms. The changes of these parameters in function of the supporting electrolyte concentration indicate the competitive adsorption of cystine and ClO ions as well as considerable participation of water molecules in adsorption -desorption processes. -4 Cent. Eur.
doi:10.2478/s11532-012-0057-7 fatcat:hovjajswzbcvthg5baw66iy5hi