Related Experiment Video
Updated: Feb 4, 2026

Gold Nanoparticle Modified Carbon Fiber Microelectrodes for Enhanced Neurochemical Detection
Published on: May 13, 2019
Simultaneous voltammetric sensing of acetaminophen, epinephrine and melatonin using a carbon paste electrode modified
Nahid Tavakkoli1, Nasrin Soltani2, Faezeh Shahdost-Fard3
1Chemistry Department, Payame Noor University, Tehran, 19395-4697, Islamic Republic of Iran. Tavakkolinahid@yahoo.com.
Abstract:
A highly selective electrochemical sensor was fabricated based on a modified carbon paste electrode with zinc ferrite nanoparticles (ZnFe2O4 NPs). The nanocomposite has attractive properties such as high surface-to-volume ratio and good electrocatalytic activity towards the drugs acetaminophen (AC), epinephrine (EP), and melatonin (MT), best at working voltages of 0.35, 0.09 and 0.55 V (vs. Ag/AgCl), respectively. The linear ranges (and detection limits) are 6.5-135 (0.4) μmol L-1 for AC, 5-100 (0.7) μmol L-1 for EP, and 6.5-145 (3) μmol L-1 for MT. Graphical abstract A novel electrochemical sensor based on a modified carbon paste electrode with zinc ferrite nanoparticles (ZnFe2O4) for the simultaneous detection of the acetaminophen, epinephrine and melatonin was fabricated.
Related Concept Videos
Standard Electrode Potentials
Porosity in Cement Paste
The balance of water to cement in the mix is...
Voltammetric Techniques: Pulse Voltammetry
Voltammetric Techniques: Cyclic Voltammetry
The Sense of Self: Reflected Self-Appraisal and Social Comparison
The Carbon Cycle

