Аннотация:The adsorption behavior of alpha -naphthylamine and its cation of mercury/n-propanol, mercury/water, and water/air interfaces has been studied. It is shown that the increase in the adsorbability of alpha -naphthylamine along the series of solvents DMF, propanol, and water correlates, as in the case of the previously studied compounds alpha -naphtholic acid and alpha -naphthol, with the increase in the maximum interfacial tension of mercury in these solvents and with the decrease in solubility along this series of solvents. On the basis of a comparison of the adsorption activity of the monofunctional derivatives of naphthalene it was concluded that the mechanism for the influence of the functional group on the adsorption of aromatic compounds depends on the relationship between two factors, viz. , the specific interaction of the polar group with metal surface and its influence on the electron density of the aromatic system.