An exfoliated graphite-based bisphenol a electrochemical sensor

Thabile Ndlovu; Omotayo A. Arotiba; Srinivasan Sampath; Rui W. Krause; Bhekie B. Mamba

doi:10.3390/s120911601

An exfoliated graphite-based bisphenol a electrochemical sensor

Thabile Ndlovu, Omotayo A. Arotiba, Srinivasan Sampath, Rui W. Krause, Bhekie B. Mamba

Chemical Sciences

Research output: Contribution to journal › Article › peer-review

60 Citations (Scopus)

Abstract

The use of an exfoliated graphite (EG) electrode in the square wave voltammetric detection of bisphenol A (a model phenolic pollutant) in water, whereby the phenolic electrode fouling challenge is mitigated, is described. The oxidation peak of BPA was observed at about 0.45 V in phosphate buffer solution at pH 10. The current response exhibited a linear relationship with the concentration over a range from 1.56 μM-50 μM. The detection limit was calculated to be 0.76 μM. The EG electrode surface was renewed after each measurement with excellent reproducibility. A real sample application was also investigated.

Original language	English
Pages (from-to)	11601-11611
Number of pages	11
Journal	Sensors
Volume	12
Issue number	9
DOIs	https://doi.org/10.3390/s120911601
Publication status	Published - Sept 2012

Keywords

Bisphenol A
Electrode fouling
Exfoliated graphite electrode
Phenol
Pollutant

ASJC Scopus subject areas

Analytical Chemistry
Biochemistry
Atomic and Molecular Physics, and Optics
Instrumentation
Electrical and Electronic Engineering

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10.3390/s120911601

Cite this

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abstract = "The use of an exfoliated graphite (EG) electrode in the square wave voltammetric detection of bisphenol A (a model phenolic pollutant) in water, whereby the phenolic electrode fouling challenge is mitigated, is described. The oxidation peak of BPA was observed at about 0.45 V in phosphate buffer solution at pH 10. The current response exhibited a linear relationship with the concentration over a range from 1.56 μM-50 μM. The detection limit was calculated to be 0.76 μM. The EG electrode surface was renewed after each measurement with excellent reproducibility. A real sample application was also investigated.",

keywords = "Bisphenol A, Electrode fouling, Exfoliated graphite electrode, Phenol, Pollutant",

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AU - Ndlovu, Thabile

AU - Arotiba, Omotayo A.

AU - Sampath, Srinivasan

AU - Krause, Rui W.

AU - Mamba, Bhekie B.

PY - 2012/9

Y1 - 2012/9

N2 - The use of an exfoliated graphite (EG) electrode in the square wave voltammetric detection of bisphenol A (a model phenolic pollutant) in water, whereby the phenolic electrode fouling challenge is mitigated, is described. The oxidation peak of BPA was observed at about 0.45 V in phosphate buffer solution at pH 10. The current response exhibited a linear relationship with the concentration over a range from 1.56 μM-50 μM. The detection limit was calculated to be 0.76 μM. The EG electrode surface was renewed after each measurement with excellent reproducibility. A real sample application was also investigated.

AB - The use of an exfoliated graphite (EG) electrode in the square wave voltammetric detection of bisphenol A (a model phenolic pollutant) in water, whereby the phenolic electrode fouling challenge is mitigated, is described. The oxidation peak of BPA was observed at about 0.45 V in phosphate buffer solution at pH 10. The current response exhibited a linear relationship with the concentration over a range from 1.56 μM-50 μM. The detection limit was calculated to be 0.76 μM. The EG electrode surface was renewed after each measurement with excellent reproducibility. A real sample application was also investigated.

KW - Bisphenol A

KW - Electrode fouling

KW - Exfoliated graphite electrode

KW - Phenol

KW - Pollutant

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EP - 11611

JO - Sensors

JF - Sensors

IS - 9

ER -

An exfoliated graphite-based bisphenol a electrochemical sensor

Abstract

Keywords

ASJC Scopus subject areas

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