摘要
本文研究了EGTA和DTPA对稀土元素可见光区的吸收光谱的增敏作用.采用偏最小二乘(PLS)分光光度法拟定在DTPA—六次甲基四胺体系中测定Eu、Sm和Pr、Ho;在EGTA—六次甲基四胺体系中测定Tm.Nd.实验结果表明对合成样品的测定相对误差均小于6%,回收率为94～105%,混合稀土样品测定结果与x—荧光配分值相比较相对误差小于10%,本方法适合于一般的工业分析,用于测定指定的六个稀土元素,设备简单,操作方便.
The enhancement of the visible range absorption spectrum of rare earth elemenfs with EGTA and DTPA has been studied in this paper, Eu-Sm and Pr -Ho defermined in a system of DTPA-hexamthylena-mine ,Nd -Tm are defermined in a system of EGTA-hexamthylenamine by Partial least squares spectropho-tometric methed ,The results show that the relative errorP of synthetic samples is below 6% and the recovery percentage is betreen 94 -105%. Compared with the determined results of x-ray fluorometric anghlysis detector ,the relative error of the determined results of the mixed rare earth samples is below 10%,This methoed is satisfacfory with the reqirement of industical analysis,The equipments are simple and the procedure is convenient by testing six tyres of rare-earth.
出处
《赣南师范学院学报》
1996年第6期46-49,共4页
Journal of Gannan Teachers' College(Social Science(2))
