Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
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Chemical Species of Uranium and Vanadium in Organic Acid Media

유기산용액에서 우라늄과 바나듐의 화학종에 관한 연구

  • Ki-Won Cha (Department of Chemistry, Inha University) ;
  • Cong-Sik Yu (Department of Chemistry, Kusan National University) ;
  • Jong-Hun Kim (Department of Chemistry, Inha University)
  • 차기원 (인하대학교 이과대학 화학과) ;
  • 유공식 (군산대학교 화학과) ;
  • 김종훈 (인하대학교 이과대학 화학과)
  • Published : 1985.12.20
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Abstract

The chemical species formed by uranium and vanadium and their equilibria have been investigated in the various concentrations of oxalic and acetic acids by the ion exchange chromatography and UV-Vis spectrophotometry. Uranyl and vanadyl ions seem to be form the complex as $UO_2(C_2O_4)_2=$, $UO_2(C_2O_4)_3^{4-}$ and $VO_2(C_2O_4)-2^{3-}$ respectively in the concentration range of 0.005∼0.05M oxalic acid concentration. In the case of acetic acid the equilibria of $UO_2^{2+}+3Ac^-=UO_2(Ac)_3^-$ and $VO_2^++2Ac^-=VO_2(Ac)_2^-$ were existed individually according to the increase of acetic acid concentration.

옥살산과 아세트산 용액의 농도변화에 따른 우라늄과 바나듐의 음이온교환수지로부터의 용리거동 및, UV및 스펙트럼 변화로부터 이들 이온의 화학종과 평형관계를 연구하였다. 0.005~0.5M 옥산살산 용액속에서 우라늄과 바나듐은 각각 $UO_2(C_2O_4)_2^{2-}$, $UO_2(C_2O-4)_3^{4-}$ 및 $VO_2(C_2O_4)_2^{3-}$의 화학종으로 존재하고, 0.01~0.1M의 아세트산 용액에서 우라늄은 $VO_2(Ac)_2^0$, $UO_2(Ac)_3^{1-}$의 화학종으로 존재하며, 바나듐은 $VO_2^++2Ac^-=VO_2(Ac)_2^-$의 평형이 이루어짐을 확인하였다.

Keywords

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