以废水样中重金属离子的分析为例对去公式化解析策略在配位滴定体系中的应用初探
Preliminary Exploration of the Application of De-Formulaic Analysis Strategy in Coordination Titration System Using the Analysis of Heavy Metal Ions in Wastewater Samples as an Example

配位滴定法作为传统化学分析中四大滴定最重要的一类之一，主要用于试样中金属离子含量的测定。考虑到EDTA的结构优势，大部分的配位滴定体系均选用EDTA作为螯合剂。基于此，本文以废水中重金属离子含量的检测为实际生产背景，基于传统分析化学原理，结合《分析化学 第二版》(邵利民编著)中所述的去公式化解析策略，设定一较为复杂的配位滴定定量体系并对其作以相对精准的解析，以此为例总结得到解决此类复杂问题的一般性去公式化解析方法，并探讨上述方法思路的局限性与应用价值。
As one of the four most important categories of titration in traditional chemical analysis, the coordination titration method is mainly used for the determination of metal ion content in test samples. Considering the structural advantages of EDTA, EDTA was used as a chelating agent in most of the coordination titration systems. Based on this, this paper takes the detection of heavy metal ions in wastewater as the actual production background, based on the traditional analytical chemistry principle, combined with the deformulation analysis strategy described in the Analytical Chemistry in the second edition (Shao Limin, Ed.), sets a complex coordination titration quantitative system and makes a relatively accurate analysis, gets a general de-formularized analytical method for solving such complex problems, and discusses the limitations of the above method and application value.