Back to Search
Start Over
Electrochemical Detection of Sudan I Using a Multi-Walled Carbon Nanotube/Chitosan Composite Modified Glassy Carbon Electrode
- Source :
- American Journal of Analytical Chemistry. :1-6
- Publication Year :
- 2013
- Publisher :
- Scientific Research Publishing, Inc., 2013.
-
Abstract
- In this work, a simple and sensitive electrochemical method was developed to determine Sudan I by cyclic voltammetry and differential pulse voltammetry using a glassy carbon electrode modified with a chitosan/carbon nanotube composite. In cyclic voltammetry, Sudan I exhibited a well-defined oxidation peak located at 0.72 V at the multi-walled carbon nanotube (MWCNT)/chitosan-modified GCE. The determination conditions, including pH, scan rate, and chitosan: MWCNT mass ratio at the modified electrode, were optimized. Under the optimum experimental conditions, Sudan I could be linearly detected by differential pulse voltammetry with a detection limit of 3.0 × 10-8 mol?L-1.
Details
- ISSN :
- 21568278 and 21568251
- Database :
- OpenAIRE
- Journal :
- American Journal of Analytical Chemistry
- Accession number :
- edsair.doi...........d63fa5ba7b077e811323fda9b4d8ff74