A SENSITIVE ELECTROCHEMICAL SENSOR BASED ON GOLD NANOPARTICLES DROPLET DEPOSITION ON GLASSY CARBON ELECTRODE FOR BISPHENOL A DETECTION

Abstract

A convenient, rapid and extremely sensitive electrochemically detection of bisphenol A (BPA) was proposed in
phosphate buffer (pH =7) on a gold nanoparticles modified glassy carbon electrode (GNs/GCE). Cyclic voltammetry
(CV) and electrochemical impedance spectroscopy (EIS) were applied for characterization of GNs/GCE.
Differential pulse voltammetry (DPV) was employed for measuring BPA. The studies exhibited lower over
potentials, improved current response, high reproducibility and lower detection limit at the GNs/GCE versus the
bare electrode. Therefore, GNs displays excellent electroactivity toward BPA. Within the concentration range of
1×10-8
to 6×10-6M. The fabricated electrochemical sensor demonstrated linear response to BPA with the detection
limit of (1.5×10-9M)