The proposed descriptors characterize the adsorption parameters of cations on Al 2 O 3 and graphene quite well (R 2 =0.64-0.86 for E ads and R 2 =0.87-0.96 for z 0 ). On Au (111), the correlations for the cations look slightly worse because some organic cations fall out of the dependencies. The correlation coefficients of adsorption and distances for the cations increase as follows: Au (111) < graphene < Al 2 O 3 (0001). In case of the anions, the correlations for E ads are somewhat worse R 2 =0.35-0.55, but still acceptable for qualitative and semi-quantitative evaluations. And the correlations for the z 0 parameter are approximately at the same level R 2 =0.64-0.95 as those for the cations.