NDLI: Simultaneous voltammetric determination of ascorbic acid and dopamine at the surface of electrodes modified with self-assembled gold nanoparticle films

Content Provider	Springer Nature Link
Author	Raoof, Jahan Bakhsh Kiani, Abolfazl Ojani, Reza Valiollahi, Roudabeh Rashid Nadimi, Sahar
Copyright Year	2009
Abstract	Gold nanoparticles (GNs) could be efficiently immobilized on binary mixed self-assembled monolayers (SAMs) on a gold surface composed of 1,6-hexanedithiol and 1-octanethiol (nano-Au/SAMs gold electrode). This GN chemically modified electrode was used for electrochemical determination of ascorbic acid (AA) and dopamine (DA) in aqueous media. The result showed that the GN-modified electrode could clearly resolve the oxidation peaks of AA and DA, with a peak-to-peak separation (∆E p) of 110 mV enabling determination of AA and DA in the presence of each other. The linear analytical curves were obtained in the ranges of 0.3–1.4 mM for AA and 0.2–1.2 mM for DA concentrations using differential pulse voltammetry. The detection limits (3σ) were 9.0 × 10−5 M for AA and 9.0 × 10−5 M for DA.
Starting Page	1171
Ending Page	1176
Page Count	6
File Format	PDF
ISSN	14328488
Journal	Journal of Solid State Electrochemistry
Volume Number	14
Issue Number	7
e-ISSN	14330768
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-09-03
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Gold nanoparticles Self-assembled monolayers Ascorbic acid Dopamine Voltammetric determination Electrical Engineering Condensed Matter Physics Characterization and Evaluation of Materials Industrial Chemistry/Chemical Engineering Analytical Chemistry Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Materials Science Electrical and Electronic Engineering Electrochemistry

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