Differential potentiometric precipitation titration of zinc(II) and copper(II) using carbon composite electrode

16th International Conference of Students and Young Scientists "Prospects of Fundamental Sciences Development"

自然科学（总论）

Poluboyarinova, J.A.^1 ; Shumar, S.V.^2

National Research Tomsk Polytechnic University, 30 Lenina Avenue, Tomsk

634050, Russia^1

National Research Tomsk State University, 36 Lenina Avenue, Tomsk

634050, Russia^2

关键词: Carbon composites;    High-accuracy;    Indicator electrodes;    Linearization methods;    Potentiometric;    Potentiometric titrations;    Sodium diethyldithiocarbamate;    Titration curves;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/597/1/012023/pdf
DOI  :  10.1088/1757-899X/597/1/012023

学科分类：自然科学（综合）

来源: IOP

【 摘 要 】

The article presents the results of investigation of potentiometric titration of the working solution containing Zn(II) and Cu(II) by sodium diethyldithiocarbamate (NaDEDC) using carbon composite electrode as the indicator electrode. The proposed method for the separate determination of copper ions (II) and zinc (II) under the joint presence was tested on data from titration model of binary mixtures and the real object. The titration curves were processed by the linearization method based on the transformation of a titration curve into the multiphase linear regression, whose parameters determine the equivalence point with high accuracy.