Extraction-chromatographic behavior of Zr(IV) and Hf(IV) on TRU and LN resins in mixtures of HNO3 and HF

The behavior of group-4 homologs Zr and Hf on extraction-chromatographic sorbents LN resin and TRU resin in mixtures of HF and HNO₃ is considered. Distribution coefficients of the elements in the mixtures of 5·10⁻⁴ M–1 M HF and 0.01 M–5 M HNO₃ are determined. Strong retention of both elements was found on LN resin in the range of concentrations c(HF) ≤ 0.01 M for all concentrations of HNO₃. Retention tends to gradually disappear while increasing c(HF) to 0.5 M. On TRU resin retention is observed only in solutions with c(HNO₃) ≥ 2 M and c(HF) ≤ 0.01 M. The possibility of separating Zr(IV) and Hf(IV) on LN resin is illustrated in two different acid mixtures, whereas their separation on TRU resin under the conditions studied in this work is difficult. The results obtained can be used to isolate analytes from multicomponent mixtures during analytical tasks, as well as to separate them from each other.

     

The dependence of 90Y sorption on nanodiamonds on sizes of their aggregates in water solutions

Journal of Radioanalytical and Nuclear Chemistry - Today nanomaterials, including carbon ones, considered to be promising radionuclide carriers for nuclear medicine. We previously determined that...     

Production of 177Lu by hafnium irradiation using 55-MeV bremsstrahlung photons

Journal of Radioanalytical and Nuclear Chemistry - The possibility of production a medical radionuclide 177Lu by irradiating natHfO2 by bremsstrahlung photons up to 55 MeV was...