分光光度法同时测定多元素的研究(Ⅱ)——以CPA-矩阵法计算混合体系中微量锆和铪

Investigation of Simultaneous Spectrophotometric Determination of Multielement——Calculation of Zirconium and Hafnium Amounts in a Mixed System by CPA-Matrix Methed

本文将m-NPF+CTMAB体系用于锆、铪混合物中微量锆、铪的同时测定。确定了同时测定锆,铪的最佳实验条件。通过使用CPA-矩阵法计算解决了混合体系中锆、铪分量的测定;对光度分析中应用CPA-矩阵法的关键——选择适宜的测定波长问题作了进一步讨论,提出了“相关波长”和“相关组份”的概念。

The previous method with m-NPF and CTMAB as reagents for spe-ctrophotometric determination of microamount of zirconium has been developed for simultaneous determination of microamount of zirconium and hafnium in this work. The determination is based on the calculation by CPA-M-atrix method. The optimum experimental conditions for the determination have been established and ten mixed samples with arbitrary proportions of Zr and Hf wereexamined by this method with very satisfactory results.Meantime the problem of selecting wavelengths which is the key to the determination is discussed thoroughly and concepts of "correlation wavelengths" and "correlation components" are proposed in this paper.