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Sensors 2016, 16(6), 756; doi:10.3390/s16060756

Sensitive Adsorptive Voltammetric Method for Determination of Bisphenol A by Gold Nanoparticle/Polyvinylpyrrolidone-Modified Pencil Graphite Electrode

1
Department of Chemistry, Graduate School of Science and Engineering, Hacettepe University, Ankara 06800, Turkey
2
Department of Chemistry, Analytical Chemistry Division, Hacettepe University, Beytepe, Ankara 06800, Turkey
*
Author to whom correspondence should be addressed.
Academic Editor: W. Rudolf Seitz
Received: 2 April 2016 / Revised: 7 May 2016 / Accepted: 18 May 2016 / Published: 25 May 2016
(This article belongs to the Section Chemical Sensors)
View Full-Text   |   Download PDF [5867 KB, uploaded 25 May 2016]   |  

Abstract

A novel electrochemical sensor gold nanoparticle (AuNP)/polyvinylpyrrolidone (PVP) modified pencil graphite electrode (PGE) was developed for the ultrasensitive determination of Bisphenol A (BPA). The gold nanoparticles were electrodeposited by constant potential electrolysis and PVP was attached by passive adsorption onto the electrode surface. The electrode surfaces were characterized by electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM). The parameters that affected the experimental conditions were researched and optimized. The AuNP/PVP/PGE sensor provided high sensitivity and selectivity for BPA recognition by using square wave adsorptive stripping voltammetry (SWAdSV). Under optimized conditions, the detection limit was found to be 1.0 nM. This new sensor system offered the advantages of simple fabrication which aided the expeditious replication, low cost, fast response, high sensitivity and low background current for BPA. This new sensor system was successfully tested for the detection of the amount of BPA in bottled drinking water with high reliability. View Full-Text
Keywords: Bisphenol A; gold nanoparticle; polyvinylpyrrolidone; pencil graphite electrode; voltammetry Bisphenol A; gold nanoparticle; polyvinylpyrrolidone; pencil graphite electrode; voltammetry
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Yaman, Y.T.; Abaci, S. Sensitive Adsorptive Voltammetric Method for Determination of Bisphenol A by Gold Nanoparticle/Polyvinylpyrrolidone-Modified Pencil Graphite Electrode. Sensors 2016, 16, 756.

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