速差动力学因子分析法测定重稀土混合物

Determination of Heavy Rare Earth Mixtures with Differential Kinetics-Factor Analysis

因子分析是解决多变量问题的一种数学方法,在化学中已应用于成分分析,但在速差动力学分析中常的应用未见报道。速差动力学分析中常用的曲线拟合法需先知道混合物的组成,并用纯组分求出动力学参数,而因子分析可不必事先知道组分数及求动力学参数。本文应用因子分析法测定重稀土的二元及三元混合物,得到较好的结果。

The kinetic behavior in the substitution reactions of heavy rare earth-arsenazo Ⅲ complex with CyDTA has been studied by an on-line spectrophotometer. Several binary and ternary mixtures of heavy rare earth elements were determined by differential simultaneous kinetics and the data were analyzed by the factor analysis. The result is satisfactory if the binary or ternary mixtures do not contain adjaeent rare earth elements.