Simultaneous electrochemical determination of epinephrine and acetylcholine using modified screen printed electrode

Abstract

Electrochemical behaviors of epinephrine and acetylcholine were investigated, using cyclic voltammetry, on the Ag-ZnO modified screen-printed electrode (Ag-ZnO/SPE). Ag-ZnO nanoplates showed excellent electrocatalytic activity toward the oxidation of epinephrine and acetylcholine compared with bare SPE in 0.1 M PBS. Under the optimized experimental conditions, a linear response obtained in the range of 0.13 to 450.00 μM with detection limit of 0.04 μM for epinephrine. Ag-ZnO/SPE exhibits good stability, reproducibility and repeatability, and the method has been successfully applied for detection of epinephrine and acetylcholine in their pharmaceutical and biological samples with satisfactory recovery.

Differential Pulse Voltammetric Analysis of Hydrazine in Water Samples by Using Screen-Printed Graphite Electrode Modified with Nitrogen-Doped Hollow Carbon Spheres

“…The screen printing method enables the production of a broad spectrum of currently commercially available screen-printed electrodes (SPEs) . In this regard, among the various electrodes applied as transducers in electrochemical (bio)­sensors, SPEs are interesting for environmental and biological analysis, because of their ease of operation, portability, and cost-effectiveness. − Thus, the screen printing method is seriously involved in the transition from conventional inflexible electrochemical cells to small and portable electrodes, which are necessary for in situ analysis …”

Screen-printed graphite electrode modified with Co3O4 nanoparticles and 2D graphitic carbon nitride as an effective electrochemical sensor for 4-aminophenol detection

“…They are miniaturized, inexpensive, easy to fabricate, disposable and with rapid responses, i.e. they possess features that make them suitable for on-site analysis [30][31][32][33]. In addition, the application of SPEs, when the surface of the working electrode is modified via nanomaterials, increases the electrode surface area and electron transfer, thus improving the analytical response [34,35].…”

MnO2 nanorods modified screen-printed electrode for the electrochemical determination of Sudan dye in food sample

“…In this context, electrochemical sensors based on screen-printed electrodes (SPEs) have gained increasing interest as analytical tools for food analysis since SPEs provide great advantages that make these kinds of sensors have the important characteristics of ideal sensors: ease of use, low cost, and portability [40][41][42]. So, the screen-printed technology has significantly contributed to the transition from the traditional unwieldy electrochemical cells to miniaturized and portable electrodes that meet the needs for on-site analysis.…”