Mixture of HIBA and glycolic acid as eluent for effective separation of yttrium and dysprosium by HPLC |
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Authors: | Haizhou Wu Noriyuki Watanabe Yohichi Gohshi Ryuji Kotama |
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Institution: | Department of Applied Chemistry, Graduate School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo, 113, Japan, JP Central Research Laboratory, Sumitomo Metal Mining Co., Ltd., 3-18-5, Nakakokubun, Ichikawa, Chiba, 272, Japan, JP
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Abstract: | A mixture of 2-hydroxy-2-methylpropanoic acid (HIBA) and glycolic acid, with 1-octanesulfonate (OS) as hydrophobic ion proved to be successful for the separation of rare-earth elements (REE). If the ratio of HIBA and glycolic acid is suitably adjusted, it is possible to separate Y from Dy. The resolution of Y and Dy was further improved by controlling the concentration of HIBA and glycolic acid. The technique was applied successfully to the separation and analysis of highly pure Y2O3 and Dy2O3. |
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