高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (9): 1355.

• 论文 • 上一篇    下一篇

改进的潜变量投影法及其在两维pH滴定中的应用

李通化, 丁林, 朱仲良, 丛培盛   

  1. 同济大学化学系, 上海, 200092
  • 收稿日期:1994-10-26 修回日期:1995-01-26 出版日期:1995-09-24 发布日期:1995-09-24
  • 通讯作者: 李通化,男,46岁,副教授.
  • 作者简介:李通化,男,46岁,副教授.
  • 基金资助:

    国家自然科学基金

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

LI Tong-Hua, DING Lin, ZHU Zhong-Liang, CONG Pei-Sheng   

  1. Department of Chemistry Tongji University, Shanghai, 200092
  • Received:1994-10-26 Revised:1995-01-26 Online:1995-09-24 Published:1995-09-24

摘要: 根据不同一元酸(或碱)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(或碱)的混合物灰色体系,已用于邻氯苯酚和对氯苯酚混合物两维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。

关键词: 潜变量投影法, 两维pH滴定, 灰色体系

Abstract: 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 pHtitrative data and the modified latent projection.

Key words: Latent projection, Two-dimensional pH titration, Grey system

TrendMD: