Extraction of nitric acid,technetium and palladium by bidentate carbamoylphosphonates |
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| Authors: | B Gorski L Kuča H Petržilová |
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| Institution: | 1. Central Institute for Isotope and Radiation Research, Permosertrasse 15, 7050, Leipzig, GDR
2. Nuclear Research Institute, 250 68, ?e?, Czechoslovakia
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| Abstract: | The extraction of HNO3, TcO 4 ? , and Pd by solutions of dibutyl N,N-diethylcarbamoylmethylenephosphonate (DBDECMP) and dibutyl N,N-diethylcarbamoylphosphonate (DBDECP) in CCl4 has been studied. At low aqueous acidities, HNO3 is extracted by both extractants (S) as HNO3·S and HNO3·S2, at >1M HNO3 only HNO3·S is formed. The distribution of TcO 4 ? and Pd(II) is nearly independent of HNO3 concentration. A second power dependence on extractant concentration was found for the extraction of Pd(II) by DBDECMP and TcO 4 ? by DBDECP, and a 4th power dependence for TcO 4 ? -DBDECMP. |
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