Issue 64, 2017, Issue in Progress

Taking advantage of CTAB micelles for the simultaneous electrochemical quantification of diclofenac and acetaminophen in aqueous media

Abstract

From spectrophotometric and electrochemical techniques, it was shown that cetyltrimethylammonium bromide, CTAB, hemimicelles, formed on the surfaces of a carbon paste electrode (CPE), selectively adsorbed diclofenac, DCF, molecules from a neutral aqueous solution of DCF and acetaminophen, ACT. This CTAB–DCF interaction is so important that it modified the DCF electrochemical oxidation mechanism from a mass-transferred controlled one (in the absence of CTAB) to an adsorption controlled mechanism which allows the simultaneous quantification of both drugs. This novel methodology was used for the individual and simultaneous quantification of DCF and ACT in both aqueous media and synthetic urine. Moreover, it is shown that the analytical method proposed in this work is similar or even better than other more sophisticated and expensive techniques available.

Graphical abstract: Taking advantage of CTAB micelles for the simultaneous electrochemical quantification of diclofenac and acetaminophen in aqueous media

Supplementary files

Article information

Article type
Paper
Submitted
01 Jul 2017
Accepted
10 Aug 2017
First published
18 Aug 2017
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2017,7, 40401-40410

Taking advantage of CTAB micelles for the simultaneous electrochemical quantification of diclofenac and acetaminophen in aqueous media

D. S. Guzmán-Hernández, M. M. Cid-Cerón, M. Romero-Romo, M. T. Ramírez-Silva, M. E. Páez-Hernández, S. Corona-Avendaño and M. Palomar-Pardavé, RSC Adv., 2017, 7, 40401 DOI: 10.1039/C7RA07269D

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