论文部分内容阅读
建立了ＩＣＰ－ＡＥＳ测定高纯Ｅｕ２Ｏ３中１４种稀土元素的方法。用正交设计法优化仪器测量条件，实验了基体Ｅｕ２Ｏ３对被测元素的干扰和对方法测定下限的影响。１４个稀土元素的测定下限为：Ｙｂ２Ｏ３０．５μｇ·ｇ－１，Ｙ２Ｏ３１μｇ·ｇ－１，Ｄｙ２Ｏ３、Ｈｏ２Ｏ３、Ｔｍ２Ｏ３和Ｎｄ２Ｏ３５μｇ·ｇ－１，Ｇｄ２Ｏ３、Ｓｍ２Ｏ３、Ｅｒ２Ｏ３、Ｃｅ２Ｏ３、Ｐｒ６Ｏ１１和Ｌａ２Ｏ３１０μｇ·ｇ－１，Ｌｕ２Ｏ３２０μｇ·ｇ－１以及Ｔｂ４Ｏ７３０μｇ·ｇ－１。加入回收率为８８－１１２％，六次取样分析的相对标准偏差小于１１％。方法简便不经化学分离，可用于９９．９－９９．９９％Ｅｕ２Ｏ３中稀土杂质的测定或生产控制分析。
A method for the determination of 14 rare earth elements in high purity Eu2O3 by ICP-AES was established. The orthogonal design method was used to optimize the measurement conditions of the instrument. The interference of Eu2O3 on the element under test and the influence on the lower limit of the method were tested. The determination limits of 14 rare earth elements are as follows: Yb2O30.5μg · g-1, Y2O31μg · g-1, Dy2O3, Ho2O3, Tm2O3 and Nd2O335μg · g-1, Gd2O3, Sm2O3, Er2O3, Ce2O3, Pr6O11 and La2O310μg · g-1 , Lu2O320μg · g-1, and Tb4O730μg · g-1. The recovery rate was 88-112%. The relative standard deviation of six sampling analyzes was less than 11%. The method is simple and convenient without chemical separation and can be used for the determination of rare earth impurities in 99.9-99.99% Eu2O3 or production control analysis.