Poly(glutamic acid) Modified Pencil Graphite Electrode for Voltammetric Determination of Bisphenol A

Authors : Ozge GORDUK

Pages : 173-186

Doi:10.18596/jotcsa.728165

View : 9 | Download : 6

Publication Date : 2021-02-28

Article Type : Research Paper

Abstract :Bisphenol A insert ignore into journalissuearticles values(BPA);, which is an endocrine-disrupting substance, is often utilized as beverage and food packing material, and it may accumulate in nutrition and water sources, which is why it is important to monitor. In this study, for the determination of bisphenol A, electro-polymerization of glutamic acid insert ignore into journalissuearticles values(GA); was performed on a pencil graphite electrode insert ignore into journalissuearticles values(PGE);. The performance of the sensor insert ignore into journalissuearticles values(PGA/PGE); for determining bisphenol A was examined utilizing the cyclic voltammetric insert ignore into journalissuearticles values(CV); and differential pulse voltammetric insert ignore into journalissuearticles values(DPV); methods. Electrochemical characterization process of the PGA/PGE was carried out by the electrochemical impedance spectroscopy insert ignore into journalissuearticles values(EIS); and CV methods. The morphological property of the PGA/PGE was investigated by scanning electron microscopy insert ignore into journalissuearticles values(SEM);. The presence of functional groups in the PGA/PGE composition was characterized by Fourier transform infrared spectroscopy insert ignore into journalissuearticles values(FTIR);. The electrochemical behavior of BPA was observed with the bare PGE and the PGA/PGE. Based on the findings, the response of BPA was considerably raised with PGA/PGE. With the optimized parameters and based on the findings from DPV, the BPA oxidation current was linear in a concentration interval of 1.0 to 100 μM insert ignore into journalissuearticles values(R=0.9992);, and the detection limit was found to be 0.37 μM. Detection of BPA in the plastic bottled drinking water sample using PGA/PGE was performed successfully, and the recoveries were in the range of 89.3 to 104.7%. This strategy can provide several prospects in electrochemically determining BPA in practical applications.
Keywords : Glutamic acid, Electro polymerization, Bisphenol A, Pencil Graphite Electrode, Voltammetric determination