36cl separation on ion exchange resins

A two-steps chemical treatment technique for chlorine assessment from aqueous samples was used in this paper. The method was applied to synthetic samples containing stable elements of Ni, Sr, Co and Eu. To remove these interfering elements, chlorine was precipitated as silver chloride, followed by its purification by ionic exchange chromatography. The fractions collected in the different stages of the method were analyzed by the inductively coupled plasma-optical emission spectrometric (ICP-OES) technique and by spectrophotometric method in order to assess the mass concentration of the elements. The combination of the precipitation with ionic exchange chromatography for complete removal of the interferences from Cl matrix leads to good recovery and decontamination factor values, therefore this method can be applied for the Cl separation from radioactive waste before beta spectrometry measurements. (authors)