基于副反应形成配合物浓度的计算公式及应用  

A Formula for the Calculation of Complex Concentrations Arising from Side Reactions and Its Applications

作　　者：叶存玲[1] 赵茜彤 王洪芳 王治科 Cunling Ye;Xitong Zhao;Hongfang Wang;Zhike Wang(College of Chemistry and Chemical Engineering,Henan Normal University,Xinxiang 453007,Henan Province,China;Institute of Environment,Henan Normal University,Xinxiang 453007,Henan Province,China)

机构地区：[1]河南师范大学化学化工学院,河南新乡453007 [2]河南师范大学环境学院,河南新乡453007

出　　处：《大学化学》2024年第4期382-386,共5页University Chemistry

基　　金：河南师范大学研究生教育改革与质量提升工程项目(XY2023ZX02);河南省高等教育教学改革研究与实践项目(学位与研究生教育,2021SJGLX208Y)。

摘　　要：配位滴定法,常用的滴定剂为EDTA(Y),体系中常存在各类副反应。本文从副反应系数(α)出发,推导出达到化学计量点时,基于配体Y与其他共存金属离子(N^(n+)),或待测金属离子(M^(n+))与其他配体(L)等副反应形成配位比为1:1的NY或ML浓度的计算公式,所得结果使该配合物浓度的计算问题得到简化。In complexometric titration,ethylenediaminetetraacetic acid(EDTA),commonly referred to as Y,is the titrant of choice.This system often encompasses various side reactions.This paper derives a formula at the stoichiometric point,based on the side reaction coefficient(α),for calculating the concentration of NY or ML coordination compounds with a coordination ratio of 1:1,where NY represents the complex of ligand Y with coexisting metal ions(N^(n+)),and ML denotes the complex of the target metal ions(M^(n+))with other ligands(L).The formulation significantly streamlines the computation of these complex concentrations.

关 键 词：配位滴定法 副反应系数 普适公式 

分 类 号：G64[文化科学—高等教育学] O6[文化科学—教育学]