Servicios Personalizados
Revista
Articulo
Indicadores
Citado por SciELO
Accesos
Links relacionados
Similares en SciELO
Compartir
Portugaliae Electrochimica Acta
versión impresa ISSN 0872-1904
Resumen
TONU, N.T. y YOUSUF, M.A.. Low Cost Electrochemical Sensor for Simultaneous Detection and Estimation of Dihydroxybenzene Isomers. Port. Electrochim. Acta [online]. 2022, vol.40, n.1, pp.59-71. Epub 28-Feb-2022. ISSN 0872-1904. https://doi.org/10.4152/pea.2022400105.
An ionic liquid (IL) based pencil graphite electrode (PGE) sensor was electrochemically fabricated for hydroquinone (HQ), catechol (CC) and resorcinol (RS) simultaneous detection and estimation in aqueous media. PGE surface was modified by 1-hexylpyridinium hexafluorophosphate (HPHP) using cyclic voltammetry (CV). The modified surface was characterized by scanning electron microscope (SEM) and energy dispersive X-ray microanalysis (EDX). The modified electrode showed an excellent electro-analytical activity towards simultaneously HQ, CC and RS, at pH 6.8 in aqueous media. The scan rate effect was diffusion controlled and the concentration effect was linear with current. The limit of detection (LOD) for HQ, CC and RS was found to be 6.38 μmol L¹, 4.56 μmol L¹ and 19.6 μmol L¹, respectively. The sensitivity for HQ, CC and RS was found to be 448.49 μAmM-1cm-2, 627.35 μAmM-1cm-2 and 146.10 μAmM−1cm−2, respectively, in a ternary mixture of dihydroxybenzene isomers (DHBIs). The cost of using PGE was lower than that of the conventional electrodes.
Palabras clave : Dihydroxybenzene isomers; ionic liquid; pencil graphite electrode and differential pulse voltammetry.
![](/img/en/iconPDFDocument.gif)