Detailed study on simultaneous separation of rare earth elements by capillary electrophoresis.
Separation of all rare earth elements (REEs) by capillary zone electrophoresis was investigated in a system of alpha-hydroxyisobutyric acid (HIBA) as a main complex reagent and acetic acid (HAc) as an assistant complex reagent. In the combined system, ligand Ac- plays an important role in improving separation of Eu and Gd, and Y and Dy. The calculated ratio of Ac- to HIB- concentrations was compared and demonstrated that Eu and Gd, and Y and Dy tend to be separated at lower, and higher ratio of the two free ligands, respectively. An operational buffer system was developed for a complete separation of all REE ions.
Sun
Yali
Y
Centro de Investigacion en Energia, Universidad Nacional Autonoma de Mexico, Priv Xochicalco s/n Centro, Temixco Mor 62580, Mexico. ysun@graduate.hku.hk
D019342:Acetic Acid / Q000737:chemistry; D002021:Buffers; D004419:Dysprosium / Q000302:isolation & purification; D019075:Electrophoresis, Capillary / Q000379:methods*; D005063:Europium / Q000302:isolation & purification; D005682:Gadolinium / Q000302:isolation & purification; D006885:Hydroxybutyrates / Q000737:chemistry; D008024:Ligands; D008674:Metals, Rare Earth / Q000302:isolation & purification*; D015019:Yttrium / Q000302:isolation & purification
D002021:Buffers; D006885:Hydroxybutyrates; D008024:Ligands; D008674:Metals, Rare Earth; D004419:Dysprosium; D005063:Europium; D015019:Yttrium; D005682:Gadolinium; C008039:2-hydroxyisobutyric acid; D019342:Acetic Acid