• 作者： Lin, Fred Hung-Jye
• 中文摘要： 銪、釤、鈰等稀土金屬離子混合物之分離可以用高效離子交換排代色層分離法分離之。本研究所採用的排代劑為乙二銨四醋酸銨。理論演算方法則應用h-轉換法以預測三成分稀土金屬離子混合物分離為單成分流出液時,採用層析柱所需之最短長度。應用簡單的逆向流分離理論可計算排代分離過程中,任意相鄰成份重疊區域的寬度。本理論可應用到多成分的系統。在本研究中銪、釤和鈰離子混合溶液之原來各離子濃度分別為152、450、840ppm。經過排代分離處理後可同時分離並濃縮成為濃度分別為3,040、3,000、2,800ppm之單一成分水溶液。本實驗所使用的預飽和劑為硝酸銅。實驗結果與理論計算極為接近。
• 英文摘要： The separation of Europium, Samarium and Cerium rare earth mixtures has been investigated by high performance ion exchange displacement chromatography with ammonium ethylenediaminetetraacetate as the displacer. h-Transformation has been used to predict the minimum column length in order to separate mixture of three rare earth metals into single-component product effluents. Simple counter-current separation theory has been used to calculate the width of the overlaping zone between any two adjacent components along the moving train. It has been shown how the theory can be applied to even more complex systems. The aqueous solution of Europium, Samarium and Cerium originally at 152, 450 and 840ppm, were separated and concentrated at the same time into pure fractions with concentrations of 3, 040, 3,000 and 2,800ppm, respectively. Cupric nitrate was shown to work as presaturants effectively. The experimental results agree well with the theoretical predictions.
• 中文關鍵字： 排代色層法; 置換色層分析法; 稀土金屬; 高效能離子層析; 離子交換; 鉗合劑
• 英文關鍵字： Displacement Chromatography; Rare Earth Metal; High Performance Ion Chromatography; Ion Exchange; Chelating Agent