Cocrystallization Processes in Physicochemical Studies of Radioactive Elements in Various Media

摘要

Cocrystallization processes widely occur in the nature and are used in chemical technology. In radiochemistry, they came into use since the end of XIX-beginning of XX century owing to studies by M. Curie, O. Hahn, V.G. Khlopin, and his disciples. They formulated the laws of isomorphous cocrystallization involving microamounts of radioactive elements. However, the formation of anomalous mixed crystals remained poorly understood. Major contribution to the development of this problem was made by A.N. Kirgintsev. Thanks to his studies and the subsequent studies made by other researchers, it became possible to make substantiated conclusions on the charges of ions of the cocrystallizing microcomponents. The use of cocrystallization processes allowed determination of the main physicochemical properties of actinides that are inaccessible in weighable amounts.