We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Electrocatalytic Properties and Voltammetric Determination of Melatonin at a Nanostructured Film Electrode.
- Authors
Qu, Wanyun; Wang, Fang; Hu, Shengshui; Cui, Dafu
- Abstract
A multi-wall carbon nanotube (MWNT) film coated glassy carbon electrode (GCE) was fabricated, and the electrochemical behavior of melatonin on the MWNT film coated GCE was investigated. The oxidation peak current of melatonin increases significantly and the oxidation peak position shifts positively at the MWNT film modified GCE compared to that at a bare GCE. This indicates that MWNTs feature highly effective catalysis to the electrochemical oxidation of melatonin. A simple and sensitive electroanalytical method was developed for the determination of melatonin. The oxidation peak current is proportional to the concentration of melatonin from 8×10-8 to 1×10-5?mol?L-1. The detection limit is about 2×10-8?mol?L-1 for 3?min accumulation. The proposed method was demonstrated to work satisfactorily with commercial capsules.
- Subjects
CARBON; LIGHT elements; NANOTUBES; FULLERENES; CARBON electrodes; ELECTROCHEMICAL analysis; MELATONIN; TRYPTAMINE
- Publication
Microchimica Acta, 2005, Vol 150, Issue 2, p109
- ISSN
0026-3672
- Publication type
Article
- DOI
10.1007/s00604-005-0328-5