纯氧化钕中钐铕的分离及分光光度法测定

Separation and Spectrophotometric Determination of Samarium and Europium in Pure Neodymia

用P507萃淋树脂色谱法分离纯氧化钕中的钐、铕,并用分光光度法测定钐、铕。回收率分别为93%,92%。RSD分别为4.4%、4.8%,结果令人满意。

The P507 resin chromatography was applied to separate Sm from Nd using 0.15mol/L HCl as the leaching solution and Eu from Nd and Sm using 0.3mol/L HCl as the leaching solution. Then the eluate solutions were trea- ted with HClO_4 and HNO_3 followed by spectrophotometric determination of Sm and Eu with arsenazo Ⅲ. The recoveries of Sm and Eu are 93% and 92% with RSD of 4.4% and 4.8% respectively. The analytical resuits of Sm and Eu in pure neodymia are satisfactory.