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Electrochemical study of the metal extractant 4-chloro-N-8-quinolinylbenzenesulfonamide
Marta Huebra (1)
, Maria Puy Elizalde (2,*) (1) Department of Applied Physics I, Universidad del País Vasco/Euskal Herriko Unibersitatea, La Casilla 3, 48012 Bilbao, Spain
(2) Department of Analytical Chemistry, Universidad del País Vasco/Euskal Herriko Unibersitatea, Apdo. 644, 48080 Bilbao, Spain
(*) Corresponding Author
Received: 16 Mar 2011 | Revised: 20 Apr 2011 | Accepted: 13 May 2011 | Published: 31 Dec 2011 | Issue Date: December 2011
Abstract
The electrochemical behaviour of the reagent 4-chloro-N-8-quinolinylbenzenesulfonamide has been studied by sampled direct current and differential pulse polarography as well as by cyclic voltamperometry techniques. Three reduction waves are obtained and the reversibility and nature of the electrodic processes are discussed. The first and third reduction waves have been explained through chemical reactions and adsorption processes involving the interaction with mercury as electrodic material, whereas the second wave is attributed to the reduction process of the reagent itself. Acidity constant values of the compound in 0.1 M KCl / 25 % methanol medium through polarographic measurements are also given. The influence of the addition of copper to the hydroalcoholic solution in the electrochemical reduction of the reagent is also described.
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DOI: 10.5155/eurjchem.2.4.441-447.417
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Universidad del Pais Vasco/Euskal Herriko Unibersitatea, Bilbao, Spain
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DOI Link: https://doi.org/10.5155/eurjchem.2.4.441-447.417
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European Journal of Chemistry 2011, 2(4), 441-447 | doi: https://doi.org/10.5155/eurjchem.2.4.441-447.417 | Get rights and content
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