分析化学滴定分析方法理论整合研究之统一滴定曲线方程  

Unifying Titration Curve Equation for Integration of Titrimetric Methods in Chemical Analysis

作　　者：岳宣峰[1,2] 谢遵园 王珊珊[1] 王紫榛 洪鑫[1] 张延妮 YUE Xuan-Feng;XIE Zun-Yuan;WANG Shan-Shan;WANG Zi-Zhen;HONG Xin;ZHANG Yan-Ni(Laboratory of Analytical Chemistry for Life Science of Shaanxi Province,School of Chemistry and Chemical Engineering of Shaanxi Normal University,Xi'an 710062,China;Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry,School of Life Science of Shaanxi Normal University,Xi'an 710062,China)

机构地区：[1]陕西省生命分析化学重点实验室陕西师范大学化学化工学院,陕西西安710062 [2]药用资源与天然药物化学教育部重点实验室、陕西师范大学生命科学学院,陕西西安710062

出　　处：《化学教育（中英文）》2023年第24期110-115,共6页Chinese Journal of Chemical Education

基　　金：陕西省自然科学基础研究计划(2022JZ-54);陕西师范大学教学改革研究项目(22JG35,23JG33);陕西师范大学大学生创新创业训练项目(202210718003x,202310718131)。

摘　　要：为了统一四大滴定曲线的方程从而进一步整合滴定理论,按照滴定反应涉及化学平衡的数目,把滴定反应分成2类,以1∶1滴定体系为例,将滴定分析的监测标度统一为p值(即pH、pM、pR_(e)-或pX),推导了相应的滴定曲线方程通式,并将通式应用于8个具体滴定分析体系,应用结果显示:通式既能较好体现原有理论的本质,又能方便地拓展至更多滴定体系,充分说明了该整合思路的合理性和科学性。In order to unify the equations for the four titration curves and further integrate ti-tration theory,according to the number of chemical equilibriums involved in the titration,the ti-trations are classified into two categories in this paper.By taking the 1:1 titration system as an example,with the monitoring scale of the titration set as the unified p form(i.e.pH,pM,pRe-or pX),two corresponding general formula for titration curve equations are derived and applied to eight specific titration systems.The application results show that the general formula not only well reflect the essence of the existing theory,but also allow easy extrapolations to more titration systems,fully demonstrating the rationality and scientificity of the integration approach pro-posed.

关 键 词：滴定理论 整合 滴定曲线方程 通式 滴定标度 

分 类 号：O655.2[理学—分析化学]