Separation and Purification for the Determination of Zirconium and Its Isotopes in PWR Spent Nuclear Fuels

PWR 사용후핵연료 중 Zr 및 Zr 동위원소 정량을 위한 분리 및 정제

  • Received : 1998.05.21
  • Published : 1998.12.25

Abstract

A method has been studied to separate Zr from various fission products in PWR spent nuclear fuels. A solution containing metal ions in place of radioactive fission products was prepared. The Zr was separated with 5 M HCl followed by eluting metal ions such as Ce, Nd, Cs, Rb, Ba, Sr, Ru, Rh, Pd, Ag and Cd with 12 M HCl on Dowex $1{\times}8$, anion exchange resin. The recovery of Zr was more than 95%. The purification of Zr was carried out on anion exchange resin, Dowex $1{\times}8$, in 5 M HCl in order to remove Mo causing isobaric effect during mass spectrometry. The method was applied to separate Zr from a spent PWR fuel. From mass spectrometric measurement, the purified Zr portion was not showed the isobars from other elements such as Mo and Sr.

Keywords

zirconium separation;anion exchange chromatography