摘要
以电荷耦合器件为检测器的 ICP- AES光谱仪直接测定混合稀土中的十五种稀土元素。考察十五种稀土元素的五十余条灵敏线的谱图 ,分析稀土元素之间的光谱干扰并利用多组分谱图拟合方法扣除空白及元素间的干扰。研究溶液酸度及仪器工作参数的影响 ,方法回收率为 98.4%～ 10 1.7% ,相对标准偏差小于2 %。
ICP-AES was used for the direct determination o f 15 rare earth elements in synthetic solutions and real sample.Spectral interfe rences between REEs in the mixtures of rare earth were investigated with a high -resolution echelle spectrometer and suitable analytical lines of 15 rare earth elements were selected.The Multicomponent Spectral Fitting(MSF)models were made .The method was used to remove spectral interferences and background.The factors influence the modes were discussed. The influences of acidity and ICP parameters were investigated.The compromise co ndition of simultaneous determination of 15 REEs was selected.Axially viewed ICP torch was used to detemine 15 REEs,The detection limits are Y 0.21 μg·L- -1,La 9.1 μg·L- -1,Ce 14.1 μg·L- -1,Pr 1.9 μg·L- -1,Nd 7.8 μg·L- -1,Tm 0.37 μg·L- -1,Yb 0.12,Lu μg·L - -1,Ho 0.06 μg·L- -1,Er 0.06 μg·L- -1,Tb 0.53 μg·L - -1,Sm 1.14 μg·L- -1,Eu 0.09 μg·L- -1,Dy 0.08 μg· L- -1,Gd 0.30 μg·L- -1.The recoveries of this procedure are betw een 98.4% and 101.7%.The RSD is within 2%.The method is rapid and accuracy.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2000年第3期357-360,共4页
Spectroscopy and Spectral Analysis
基金
国家进出口商品检验局资助
