回归分析在稀土元素光度分析中的应用  

APPLICATION OF REGRESSION ANALYSIS IN RARE EARTH ANALYSIS

作　　者：林智信[1] 蔡汝秀[1] 方贤安[1] 曾云鹗[1] Lin Zhixin;Cai Ruxiu;Fang Xianan;Zeng Yune(Department of chemistry,Wuhan University,Wuhan)

机构地区：[1]武汉大学化学系

出　　处：《高等学校化学学报》1983年第1期31-35,共5页Chemical Journal of Chinese Universities

摘　　要：本文研究了共显色效应对稀土元素光度分析的影响;探讨了在TRS-80型微处理机上用回归分析法处理实验数据问题。结果表明,在镧存在下用偶氮氯膦Ⅲ测定钇,可使测量误差从+26±15%降低至+3.6±3.0%。该方法简单、快速。In the present paper, it has researched the effect of co-color action on the sperctrophotometric analysis of the rare earth. It has been discovered that when lighter and heavier rare earth are coexisted the absorbance of complex of the heavier rare earth with chlorophosphonazo-Ⅲ obviously increases under a certain experimental condition and that the absorbances appear a regular change with increasing of content of the lighter rare earth. We have probed into using the method of regression analysis on the microcomputer of TRS-80 type for treating experimental results. Namely, these two regression equations are built up for λ_(max) of a and β _(peak), respectively. Therefore, after these two absorbance values were measured on these two λ_(max) for single sample and inputting into microcomputer it is able in a measured result to predict the content of the lighter and heavier rare earth and to cancel partial effect of the co-color action. The self-edited computer program with BASIC has passed through active state examination. With microcomputer to carry out regression treatment the result has shown that the use of chlorophosphonazo-β for determining Y in the presence of La may decrease measured error from +26±15% to +3.6 ±3.0%Above method is simple, fast and convenient. In principle, the accuracy consists with requirement of spectrophotometric analysis.

关 键 词：光度分析 共显色效应 稀土元素 回归分析 偶氮氯膦Ⅲ 微处理机 测量误差 处理实验数据 

分 类 号：O65[理学—分析化学]