【摘要】 该文研究了用吡咯啶二硫代氨基甲酸铵 (APDC)—甲基异丁基酮(MIBK)萃取体系 ,火焰原子吸收法测定高级纯稀土氧化物中的锌 .建立了优化的测定条件 ,并对可能存在的元素作了干扰实验 .实验结果表明 ,氧化铕相对标准偏差为5 .44% ,氧化钐为 3.2 4 % ,加标回收率氧化铕为 95 .73%～ 98.5 1 % ,氧化钐为 95 .2 9%～ 1 0 1 .5 9% .更多还原

【Abstract】 The content of zinc in rare-earth oxides (Eu 2O 3,Sm 2O 3) was determined by flame atomic absorption spectrometry (FAAS) after concentrated by APDC-MIBK extraction system. The determination conditions are optimized. The experiment results indicate that the relative standard deviation for Eu 2O 3 and Sm 2O 3. are 5.44% and 3.24%, respectively. The respective recovery rates are 95.73%～98.51% for Eu 2O 3,95.29%～101.59% for Sm 2O 3.更多还原