The Influence of Water Activity on Double Layer Parameters on the Interface Mercury/Chlorates (VII) in the Presence of Cysteine

摘要

The influence both the cysteine concentration and water activity on the double layer parameters onthe interface mercury/ chlorates (VII) was examined. The adsorption parameters for the double layer werecalculated from a double-layer differential capacity measurement extrapolated to zero frequency.The values of the relative surface excess increase of the cysteine concentration and chlorates (VII) solutions.It was found that the values of free adsorption energy and interactions constants, obtained fromFrumkin and virial isotherms, depend on the supporting electrolyte concentration. The changes of determinedparameters in the function of water activity water point at the participation of 4 ClO ions in the adsorptionprocesses, or that in the double layer the electrostatic interactions between the dipoles of 2 H Oand cysteine compounds exist.(doi: 10.5562/cca2022)