Study of the state of95Zr+95Nb in aqueous solutions

The adsorption on paraffine and polyethylene and the paper chromatography in aqueous solutions in the pH range of 2–12 were used for the study of the behaviour of⁹⁵Zr and⁹⁵Nb. The effect of complexing ions (SO ₄ ^2? and CO ₃ ^2? ) was studied in the same pH range. The constants of hydrolysis and the composition of hydrolytic species of⁹⁵Zr in the solution containing sulphate ions were determined in the pH range of 1–2. The paper chromatography was used for the control of the purity of⁹⁵Zr after an extractive separation from⁹⁵Nb with α-benzoinoxime. The possibility of studying the extraction processes of Zr (without its previous separation from Nb) by reversed phase chromatography is shown. Conditions for the formation of polynuclear compounds of Zr and Nb and their influence on the extraction separation in nitrate media were studied.