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Selective detection of Cu<SUP>2+</SUP> ions using a mercaptobenzothiazole disulphide modified carbon paste electrode and bismuth as adjuvant: a theoretical and electrochemical study
| Indexado |
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| DOI | 10.1039/D2NJ02156K | ||||
| Año | 2022 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Abstract
A novel type of mercaptobenzothiazole disulfide (MBTS) modified carbon paste electrode (CPE-MBTS) was developed in the present study. DFT calculations identified an enhanced electrophilic character, and conductance of the modified electrode's interface, through bismuth coadsorption with the studied metal cations. Also, the strong binding energy of Cu2+ on the MBTS adsorption sites facilitates its selective and quantitative detection. Experimentally, the electrode was able to detect Cd, Cu and Pb, showing greater affinity for Cu, so the electrochemical study was focused on optimizing the selectivity and sensitivity of CPE-MBTS towards this metal. The detection of copper was done by square wave anodic stripping voltammetry (SWASV), yielding a LOD and LOQ of 0.34 ppm and 1.02 ppm, respectively, with good repeatability. The analysis of real samples showed the reliability of this electrode for the detection of Cu2+ in different types of waters.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Flores-Alvarez, Jose Manuel | Hombre |
Univ Colima - México
Universidad de Colima - México |
| 2 | CORTES-ARRIAGADA, DIEGO ANDRES | Hombre |
Universidad Tecnológica Metropolitana - Chile
|
| 3 | Gomez-Sandoval, Z. | Hombre |
Univ Colima - México
Universidad de Colima - México |
| 4 | Kudur Jayaprakash, Gururaj | - |
Shoolini Univ - India
Nitte Meenakshi Inst Technol - India Shoolini University - India Nitte Meenakshi Institute of Technology - India |
| 5 | Ceballos-Magana, Silvia Guillermina | Mujer |
Univ Colima - México
Universidad de Colima - México |
| 6 | Muniz-Valencia, Roberto | Hombre |
Univ Colima - México
Universidad Bernardo O'Higgins - Chile Universidad de Colima - México |
| 7 | Rojas-Montes, Jaime Cristobal | Hombre |
Catedras CONACyT TecNM IT Durango - México
TecNM IT Durango - México División de Estudios de Posgrado e Investigación - México Cátedras CONACyT-TecNM/I.T. Durango - México |
| 8 | Pineda-Urbina, K. | - |
Univ Colima - México
Universidad de Colima - México |
| Fuente |
|---|
| CONACYT |
| Consejo Nacional de Ciencia y Tecnología |
| NLHPC |
| Secretaría de Educación Pública |
| SEP-PRODEP |
| ANID/FONDECYT |
| CONICYT-FONDEQUIP-EQM180180 |
| Agradecimiento |
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| The authors are grateful to SEP-PRODEP for grant 31423 of "Fortalecimiento de Cuerpos Academicos 2020'' and to CONACYT for "Apoyos a la Ciencia de Frontera: Fortalecimiento y Mantenimiento de Infraestructuras de Investigacion de Uso Comun y Capacitacion Tecnica 2021'' grants 316686 and 317007. D.C-A thanks the project ANID/FONDECYT 1210355, and computational resources through the CONICYT-FONDEQUIP-EQM180180. Powered@NLHPC: This research was partially supported by the supercomputing infrastructure of the NLHPC (ECM-02). |
| The authors are grateful to SEP-PRODEP for grant 31423 of “Fortalecimiento de Cuerpos Académicos 2020” and to CONACYT for “Apoyos a la Ciencia de Frontera: Fortalecimiento y Mantenimiento de Infraestructuras de Investigación de Uso Común y Capacitación Técnica 2021” grants 316686 and 317007. D.C-A thanks the project ANID/FONDECYT 1210355, and computational resources through the CONICYT-FONDEQUIP-EQM180180. Powered@NLHPC: This research was partially supported by the supercomputing infrastructure of the NLHPC (ECM-02). |
