B. B. Damaskinz
Moscow State University, Vorob’evy Gory 1, Moscow, 119992 Russia
Received April 21, 2005
Abstract—A regression technique is used for analyzing electrocapillary curves (ECC) in secondary butanol
solutions, which were published earlier. It was shown that, in contrast to similar analysis of electrocapillary
curves for a number of other compounds, if we want to describe the adsorption of 2-BuOH within the frame-
work of the model of two parallel capacitors, the linear dependence of the parameter of intermolecular interac-
tion on the electrode potential should be taken into account. This result stems from the very high accuracy of
interface tension measurements in the system under study. It is found that, in terms of the Frumkin isotherm
and the model of two parallel capacitors, the interpretation of data on the adsorption of 2-BuOH has a much
simpler physical meaning as compared with the strictly thermodynamic approach used earlier.
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