An Exfoliated Graphite-Based Bisphenol A Electrochemical Sensor

Sensors

Thabile Ndlovu¹  Omotayo A. Arotiba¹  Srinivasan Sampath¹  Rui W. Krause¹ 

[1] Department of Applied Chemistry, University of Johannesburg, P.O. Box 17011, Doornfontein 2028, Johannesburg, South Africa; E-Mails:

关键词: exfoliated graphite electrode;    bisphenol A;    phenol;    electrode fouling;    pollutant;   

DOI  :  10.3390/s120911601

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.