The selective separation of 90Sr and 99Tc in nuclear waste using molecular recognition technology products

This paper describes the use of IBC’s AnaLig® Sr-01 and AnaLig® Tc-02 molecular recognition technology products to effectively and selectively separate and recover strontium and technetium from radioactive waste solutions. The use and effectiveness of AnaLig® Sr-01 and AnaLig® Tc-02 are also compared with traditional commonly applied methods using Eichrom’s Sr Resin and TEVA Resin. Different concentrations of Ca²⁺, Ba²⁺, Pb²⁺, and K⁺ interfering ions on Sr²⁺ sorption were tested. Methods for the determination of ⁹⁰Sr and ⁹⁹Tc with emphasis on avoiding so called “matrix effects”, maximizing chemical recoveries, selectivity, minimizing time of analyses and reaching the lowest LLD were modified or developed.