[en] The theoretical heats of formation of ordered solid equiatomic alloys and the partial heat of mixing at infinite dilution of the elements 112 - 115 in molten metals have been calculated using a calculation model (MEIDEMA). Necessary data of the superheavy elements (bulk modulus, molar volume, electronegativity parameter) have been determined by extrapolation. Thermochromatographic experiments have shown that a relation exists between the interactions of metals in macroscopic binary systems and the adsorption behaviour of one component in carrier free state on the surface of the stationary metal phase. It is suggested to use these interactions between the volatile superheavy elements and the stationary metal phase to the selective adsorption - chromatographic separation -and identification processes. It is refered to possible natural association of these elements with elementary occured metals (Pd). (author)