NDLI: Simultaneous determination of levodopa and carbidopa by a novel nanostructure modified carbon paste electrode

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Simultaneous determination of levodopa and carbidopa by a novel nanostructure modified carbon paste electrode

Content Provider	Springer Nature Link
Author	Beitollahi, Hadi Naeimi, Hossein Mazloum Ardakani, Mohammad Sheikh Mohseni, Mohammad Ali
Copyright Year	2011
Abstract	The electrochemical behavior of levodopa (LD) was investigated on the surface of a carbon paste electrode modified with TiO$_{2}$ nanoparticles and 2,2′-(1,2 butanediylbis(nitriloethylidyne))-bis-hydroquinone (BNH). The prepared modified electrode showed an efficient catalytic role in the electrochemical oxidation of LD, leading to a remarkable decrease in oxidation overpotential and enhancement of the kinetics of the electrode reaction. The mechanism of the electrocatalytic process on the surface of the modified electrode was analyzed by obtaining the cyclic voltammograms in various potential sweep rates. This modified electrode exhibited well-separated oxidation peaks for LD and carbidopa (CD). The differential pulse voltammetry was applied as a very sensitive analytical method for the determination of LD and CD. A linear dynamic range of 2.0–600.0 and 20.0–400.0 μM with a detection limit of 0.2 μM (with sensitivity of 0.199 μA μM$^{−1}$) and 10 μM (with sensitivity of 0.024 μA μM$^{−1}$) was obtained for LD and CD, respectively. The modified electrode was prepared quite easily and renewed on the surface by simple polishing.
Starting Page	27
Ending Page	34
Page Count	8
File Format	PDF
ISSN	1735207X
Journal	Journal of the Iranian Chemical Society
Volume Number	9
Issue Number	1
e-ISSN	17352428
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-12-21
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	TiO$_{2}$ nanoparticles Electrocatalysis Analytical Chemistry Carbidopa Physical Chemistry Biochemistry Levodopa Inorganic Chemistry Modified carbon paste electrode Organic Chemistry
Content Type	Text
Resource Type	Article
Subject	Chemistry

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