Development of 126Sn separation method by means of anion exchange resin and gamma spectroscopy

This paper describes a method employing anion exchange resin for determination of 126Sn in radioactive waste. The method is suitable for the separation of 126Sn isotope from hydrochloric and hydrofluoric acid solution. The separation is based on precipitation of tin with ammonium sulfide in 0.5 mol L−1 HCl, dissolution of the precipitate in concentrated HCl, loading in 2 mol L−1 HCl onto anion exchange resin column and elution with 2 mol L−1 HNO3. 126Sn was measured by gamma spectrometry.