INVESTIGATION OF SPECIES OF URANIUM ISOTOPES IN AKSHATAU DEPOSIT OF KARAGANDA REGION (KAZAKHSTAN)

Abstract

In this manuscript the species of uranium isotopes in Akshatau deposit of Karaganda region of Kazakhstan are described. Akshatau rare metal deposit is located in the northern part of the Dzungaro-Balkhash geosyncline. By origin, it is Greisenian with molybdenum-tungsten mineralization, genetically associated with an array of leucocratic granites of Permian age. The species of elements are the most important in studies of investigation of migration ability of contaminants, as well as their bioability and hence bioaccumulation. The knowledge of total content of element is less informative in these questions. The study of the sequential extraction of uranium isotopes from the waste of the Akshatau deposit, according to A. Tessier protocol, showed that uranium-238 was recorded in the following order: F6 residual ˃ F1 exchangeable ˃ F3 bound to Fe-Mn oxides ˃ F5 acid soluble ˃ F2 bound to carbonates ˃ F0 water-soluble ˃ F4 bound to organic matter; and uranium-234 has the following order: F6 residual ˃ F1 exchangeable ˃ F3 bound to Fe-Mn oxides ˃ F5 acid soluble  F2 bound to carbonates  F0 water-soluble ˃ F4 bound to organic matter.

References

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