Phase Fractionation of Chemical Elements During the Formation of Ice in Fresh Surface Waters

According to experimental modeling data, the quantitative characteristics of macro and trace elements phase fractionation in the process of ice formation from fresh surface waters were obtained. Significant variations in the values of the integral distribution coefficient were established, apparently due to processes not associated with the entering of elements into the ice crystal lattice. It was suggested that such processes may include ice adhesive uptake of suspended and colloidal particles, sorption of organic and inorganic components on the surface of growing ice, formation of chemogenic solid phases at the water–ice boundary, and flocculation and coagulation of colloids near the boundary between the liquid and solid phases.