AUTHOR=Fayemi Omolola E. , Elugoke Saheed E. , Dina Oluwole , Mwanza Mulunda , Fayemi Peter O. 

TITLE=Harnessing Fe3O4 Screen-Printed Modified Electrode Sensor for Detecting Epinephrine in Buff Orpington Rooster and Rhodes Island White Broiler

JOURNAL=Frontiers in Sensors

VOLUME=Volume 3 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/sensors/articles/10.3389/fsens.2022.850316

DOI=10.3389/fsens.2022.850316

ISSN=2673-5067

ABSTRACT=This study presents the detection of epinephrine (EP) at Fe3O4 modified screen printed silver electrode (SPSE). The iron oxide (Fe3O4) nanoparticles was characterized with the UV-visible spectroscopy, Fourier-Transform infrared spectroscopy (FT-IR), Transmission electron microscopy (TEM), and Scanning electron microscopy (SEM) prior to the modification of the SPSE. The EP oxidation peak current (Iap) increased with an increase in EP’s concentration as well as the scan rate (from 25 - 400 mV s-1). Using cyclic voltammetry (CV), the relationship between Iap and EP concentration was linear over a range of 3.8 -118.9 µM with a detection limit of 41.99 µM and, with differential pulse voltammetry (DPV), a detection limit of 28.87 μM (S/N =3) over a linear range of 9.99 - 60.9 µM was obtained. Simultaneous detection of EP in the presence of ascorbic acid was also achieved at this electrode.  The fabricated sensor was used to detect EP in buff Orpington rooster and Rhodes island white broiler with better recovery.