A Simple Method for the Separation of Thorium in the Analysis of Monazite

모나자이트 분석을 위한 간편한 토륨분리법

  • Lee Chull (Chemistry Division, Atomic Energy Research Institute) ;
  • Chung Koo Soon (Department of Chemistry, Sogang University)
  • 이철 (한국원자력연구소 화학연구실) ;
  • 정구순 (서강대학교 화학과)
  • Published : 1971.02.28


A separation scheme using cation exchange procedure is designed specifically for the rapid determination of thorium in monazite samples. All the coexisting ions in monazite, including rare earth ions, are eluted with 3N hydrochloric acid. The remaining thorium is eluted from the resin column with 5N sulfuric acid prior to spectrophotometric determination with thorin reagent. The radioactive tracers and spectrophotometric methods were used to confirm the quantitative elution of thorium and also the chemical purity of the eluted thorium from the column.



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