摘要
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 Europium oxide has been developed in this paper.The interferences of matrix Eu2O3 on the 14 elements measured and their detection limits were studied. The instrumental parameters including R. F. generator power, carrier gas flow rate, height of torch installed and the temperature of dedissolved chamber were optimized with cross test and the flow rate of sampling. The detection limits of the 14 RE elements are Yb2O3 0. 5; Y2O3 1.0; Dy2O3, Ho2O3, Tm2O3 and Nd2 O3 5. 0; Gd2O3, Sm2O3 Er2O3, CeO2, Pr6O11 and La2O3 10; Tb4O7 and Lu2O3 20 and Tb4O730 μg.g-1, respectively. The recoveries of this procedure are between 88% and 112%. The rellative standard deviation (RSD) is within 11 %.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
1995年第4期71-74,84,共5页
Spectroscopy and Spectral Analysis
关键词
稀土
ICP-AES
氧化铕
Rare earth elements, ICP-AES, Europium oxide
