Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Ion Exchange Separation and Spectrofluorometric Determination of Lanthanides in Nuclear Grade Material

이온 질환수지 및 형광분석법에 의한 핵급물질 중희토류원소의 분리정량

  • Ki-Soo Cho (Korea Advanced Energy Research Institute Daeduk Engineering Center) ;
  • In-Suck Suh (Korea Advanced Energy Research Institute Daeduk Engineering Center)
  • Published : 1983.06.01
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Abstract

Distribution coefficients between cation exchange resin (Dowex 50W$\times$8) and $\alpha$-hydroxyisobutric acid ($\alpha$-HIBA) are measured in order to separate traces of Sm, Eu, Gd and Dy from nuclear material. Individual separations are performed by pH gradient technique with 0.40M $\alpha$-HIBA from 3.40 to 3.60 in cation exchange resin after a group separation. Each of separated elements is determined with a fluorometric method except Gd by colorimetry. The results are applied to analyze Sm, Eu, Gd and Dy in magnesium diuranate (yellow cake).

핵급물질에 함유된 미량 희토류윈소인 Sm, Eu, Gd, Dy를 개별 분리하기 위해 Dowex50W$\times$8 양이온교환수지와 $\alpha$-hydroxyisobutyric acid ($\alpha$-HIBA) 사이에서 분배계수를 측정하였다. 양이온교환수지를 이용하여 우라늄매질로부터 미량희토류원소를 군분리한 후 0.40M$\alpha$-HIBA용리액의 pH를 3.40에서 3.60까지 변화시키면서 개별분리하였다. Sm, Eu, Dy은 형광분석법으로 Gd은 비색법으로 정량하였으며 실험결과를 토대로하여 magnesium diuranate(yellow cake) 중의 Sm, Eu, Gd, Dy를 각각 정량하였다

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