Journal
SENSORS
Volume 12, Issue 9, Pages 11601-11611Publisher
MDPI AG
DOI: 10.3390/s120911601
Keywords
exfoliated graphite electrode; bisphenol A; phenol; electrode fouling; pollutant
Funding
- University of Johannesburg (UJ)
- Nanotechnology Innovation Centre (NIC)
- National Research Foundation
- Council for Scientific and Industrial Research (CSIR)
- Indian Institute of Science
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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 mu M-50 mu M. The detection limit was calculated to be 0.76 mu M. The EG electrode surface was renewed after each measurement with excellent reproducibility. A real sample application was also investigated.
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