Study of the Complexation of Pb(II) with meso-2,3-Dimercaptosuccinic Acid (DMSA) and 2,3-Dimercapto-1-propanesulfonic acid (DMPS) Using a Bismuth-Bulk Rotating Disk Electrode

被引：5
|
作者：
de la Gala Morales, Maria [1 ]
Arino, Cristina [2 ]
Diaz-Cruz, Jose Manuel [2 ]
Esteban, Miquel [2 ]
机构：
[1] Univ Extremadura, Dept Analyt Chem, Badajoz 06006, Spain
[2] Univ Barcelona, Dept Quim Analit, E-08028 Barcelona, Spain
来源：
ELECTROANALYSIS | 2014年 / 26卷 / 09期
关键词：
Bismuth bulk rotating disk electrode (BiB-RDE); Voltammetry; Pb(II)-DMSA complexes; Pb(II)-DMPS complexes; Multivariate curve resolution by alternating least squares (MCR-ALS); ANODIC-STRIPPING VOLTAMMETRY; BLOOD LEAD CONCENTRATIONS; INTELLECTUAL IMPAIRMENT; CARBON ELECTRODES; FILM ELECTRODES; BEHAVIOR; DRUGS;
D O I：
10.1002/elan.201400279
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
For the first time, the suitability of bismuth bulk rotating disk electrode (BiB-RDE) for the study of metal complexation has been tested. Cyclic (CV) and differential pulse (DPV) voltammetry have been used to study the complexation of Pb(II) with two of the most effective chelating agents for the treatment of Pb(II) poisoning (meso-2,3-dimercaptosuccinic acid, DMSA, and 2,3-dimercapto-1-propanesulfonic acid, DMPS). Multivariate curve resolution has been applied to voltammetric data to obtain the stoichiometries and stability constants of the complexes formed. In both systems, the ML2 complex was predominant, with log beta(2) values of 10.13 and 8.80 for DMSA-Pb(II) and DMPS-Pb(II), respectively.
引用
收藏
页码：1912 / 1919
页数：8
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