分光光度法测定混合稀土中的钕  

Determination of Neodymium in Rare Earth Mixture by Spectrophotometry

作　　者：张玻[1] 贾江涛[1] 廖春生[1] 严纯华[1] 

机构地区：[1]北京大学稀土材料化学及应用国家重点实验室

出　　处：《稀有金属》2008年第4期540-542,共3页Chinese Journal of Rare Metals

基　　金：科技部支撑计划(2006BAC02A06)资助项目

摘　　要：采用分光光度法,以740 nm为测定波长测定混合稀土样品中的钕含量。在此波长下,吸光度-浓度工作曲线的线性相关系数大于0.9999。对已知组成的6个轻稀土混合物样品的测量结果表明,回收率介于98.97%-101.9%之间,检测下限为2.0 mg Nd2O3/ml。本方法可准确测定镨钕混合物、混合轻稀土等产品或中控样品中的钕含量,具有测量结果可靠、速度快、仪器常规和实验条件简便易行等特点,适用含钕样品的快速测定。An optimal wavelength of 740 nm was selected to determine neodymium content in rare earth mixture by spoctrophotometry . The linear relative coefficient of the working curve of absorbance vs. concentration was more than 0. 9999. Six mixed light rare earth samples with known composition were taken to test the method and the test result showed the recovery rates was in the range from 98.97% to 101.9%. The lower limit of the Nd^3＋ which could be detected was 2.0 mg Nd2O3/ml. Finally, the neodymium content in a didymium oxide sample was also determined by this method. The results proved that this method was facile and practical for measurement of the content of neodymium.

关 键 词：分光光度法 钕 稀土 

分 类 号：O614.33[理学—无机化学]