Possibility of a high degree of removal of silver from fission palladium by petroleum sulfides

In order to use low-level fission palladium in technology, the paladium mus t be purified to a high degree with respect to foreign radionuclides with c lose chemical properties - ruthenium, antimony and silver. The results of a simulation of an optimized two-cycle extraction scheme for extracting and refining palladium on the basis of one extractant - an arom atic solution of petroleum sulfides: first cycle with nitrate mid second cy cle with chloride system - are examined. The behavior of trace concentrations of silver is investigated and it is sh own that total deep removal of silver from palladium of not less than 4.10( 7)-40 in the first cycle and 10(6) in the second cycle with a small number of extraction, washing and reextraction steps can be attained. 2 figures, 3 tables, 6 references.