We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Nanostructured Base Electrochemical Sensor for Simultaneous Quantification and Voltammetric Studies of Levodopa and Carbidopa in Pharmaceutical Products and Biological Samples.
- Authors
Beitollahi, Hadi; Mostafavi, Mortaza
- Abstract
A novel carbon paste electrode modified with carbon nanotubes and 5-amino-2′-ethyl-biphenyl-2-ol (5AEB) was fabricated. The electrochemical study of the modified electrode, as well as its efficiency for electrocatalytic oxidation of levodopa (LD) and carbidopa (CD), is described. Cyclic voltammetry (CV) was used to investigate the redox properties of this modified electrode at various scan rates. The apparent charge transfer rate constant, ks, and transfer coefficient, a, for electron transfer between 5AEB and CPE were calculated as 17.3 s−1 and 0.5, respectively. Square wave voltammetry (SWV) exhibits a linear dynamic range from 2.5×10−7 to 2.0×10−4 M and a detection limit of 9.0×10−8 M for LD.
- Subjects
CARBON electrodes; CARBON nanotubes; DOPA; ELECTROCHEMICAL analysis; ELECTROCATALYSTS; ELECTROCATALYSIS
- Publication
Electroanalysis, 2014, Vol 26, Issue 5, p1090
- ISSN
1040-0397
- Publication type
Article
- DOI
10.1002/elan.201400074