Form of occurrence of radio elements in crystalline substances

Summary

• 1. The proposed methods of “comparative leaching* and emanation are fruitful for establishing the forms of occurrence of micro amounts of radio elements in crystalline substances.

• 2. The hypothesis put forward previously on the difference in the positions of the mother substances and their decay products in the crystal lattice is confirmed completely by the results of experimental investigations of leachability and emanation.

• 3. The established separation of isotopes of the mother substances and their decay products (Th and RdTh, UI and UII and Pb and RaD) should be explained by differences in their position in the crystal lattice.

• 4. The lower leachability of RdTh in comparison with ThX is largely explained by the greater adsorption capacity of RdTh than ThX.

• 5. Available data on the radio element content of natural waters is in complete agreement with the ideas put forward on the mechanism of radio element migration.

• 6. The results obtained from studying the migration conditions of radio elements from minerals apparently can be applied to a considerable extent to the state of radio elements in artificially prepared salts.