Simultaneous Electrochemical Determination of Dihydroxybenzene Isomers at 1-Butyl-3-Methylimidazolium Hexafluorophosphate Modified Pencil Graphite Electrode
Category:- Journal; Year:- 2021
Discipline:- Chemistry Discipline
School:- Science, Engineering & Technology School
Abstract
A simplistic and inexpensive electrochemical platform has been fabricated for the
simultaneous detection of Dihydroxybenzene Isomers; named- Hydroquinone
(HQ), Catechol (CC) and Resorcinol (RS); in aqueous system. Cyclic
Voltammetry and Differential Pulse Voltammetry were adopted for the detection
technique. 2B pencil (Faber Castell) collected from the resident stationary shop
was used for fabricating Pencil Graphite Electrode (PGE) used as working
electrode. PGE was characterized by SEM and EDX. It was modified
electrochemically by ionic liquid, 1-Butyl-3-Methylimidazolium
hexafluorophosphate (BIHP). Total analyses were performed in phosphate buffer
solution at pH 7.0. BIHP-PGE showed good selectivity and robust antiinterference for detection of HQ, CC and RS simultaneously in aqueous media.
For HQ, CC and RS, the limit of detection is 9.09 µML-1
, 8.15 µM L-1 and 26.78
µM L-1
, respectively and sensitivity is 525.21 µA/mM/cm2
, 585.68 µA/mM/cm2
and 178.00 µA/mM/cm2
, respectively at BIHP-PGE in simultaneous detection.