改进的潜变量投影法及其在两维pH滴定中的应用

根据不同一元酸滴定曲线先出现先不变的特点，提出一种改进的潜变量投影法，定义了单变信息区，推导了求变换向量的公式，该法可分析两种一元极弱酸的混合物灰色体系，已用于邻氯苯酚和对氯苯酚合物两维ＰＨ滴定分析，得到分布系数和浓度分布，结果表明，预报准确度较高。

Modified Latent Projections and Its Applications in Two-dimensional pH Titration

A modified latent projection is proposed based on the characters of first in and first fixed feature of the titrative distributive coefficients of monoacids or monobases that have different pK. The single variant region is defined and the transfer vector is derived. Grey system which consists of two monoacids(or bases) mixtures can be ananyzed by this method.The pure titrative distributive coefficients and concentrations for p-chlorophenol and o-chlorophenol mixtures are obtained by using two-dimensional pH titrative data and the modified latent projection.