Behaviour of Zr, Hf, Nb, Ta and Pa on macroporous anion exchanger in chloride–fluoride media

Sorption properties of Zr, Hf, Nb, Ta and Pa at trace level towards a macroporous anion exchanger in HF–HCl media were investigated with two ion exchange methods: static (batch technique) and dynamic (column chromatography using the elution mode). Variations of the distribution coefficients as a function of HCl and HF concentration in the range 0.02–0.8 M for both acids are presented in the form of contour plots. Some of the most promising separation possibilities are pointed out.