Simultaneous Determination of Hydroquinone and Catechol at a Glassy Carbon Electrode Modified with Multiwall Carbon Nanotubes

Simultaneous Determination of Hydroquinone and Catechol at a Glassy Carbon Electrode Modified... A simply and high selectively electrochemical method for simultaneous determination of hydroquinone and catechol has been developed at a glassy carbon electrode modified with multiwall carbon nanotubes (MWNT). It was found that the oxidation peak separation of hydroquinone and catechol and the oxidation currents of hydroquinone and catechol greatly increase at MWNT modified electrode in 0.20 M acetate buffer solution (pH 4.5). The oxidation peaks of hydroquinone and catechol merge into a large peak of 302 mV (vs. Ag/AgCl, 3 M NaCl) at bare glassy carbon electrode. The two corresponding well‐defined oxidation peaks of hydroquinone in the presence of catechol at MWNT modified electrode occur at 264 mV and 162 mV, respectively. Under the optimized condition, the oxidation peak current of hydroquinone is linear over a range from 1.0×10−6 M to 1.0×10−4 M hydroquinone in the presence of 1.0×10−4 M catechol with the detection limit of 7.5×10−7 M and the oxidation peak current of catechol is linear over a range from 6.0×10−7 M to 1.0×10−4 M catechol in the presence of 1.0×10−4 M hydroquinone with the detection limit of 2.0×10−7 M. The proposed method has been applied to simultaneous determination of hydroquinone and catechol in a water sample with simplicity and high selectivity. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Electroanalysis Wiley

Simultaneous Determination of Hydroquinone and Catechol at a Glassy Carbon Electrode Modified with Multiwall Carbon Nanotubes

Electroanalysis, Volume 17 (10) – Jan 1, 2005

Loading next page...
 
/lp/wiley/simultaneous-determination-of-hydroquinone-and-catechol-at-a-glassy-Yt8NkmpR3d
Publisher
Wiley
Copyright
Copyright © 2005 Wiley Subscription Services
ISSN
1040-0397
eISSN
1521-4109
DOI
10.1002/elan.200403150
Publisher site
See Article on Publisher Site

Abstract

A simply and high selectively electrochemical method for simultaneous determination of hydroquinone and catechol has been developed at a glassy carbon electrode modified with multiwall carbon nanotubes (MWNT). It was found that the oxidation peak separation of hydroquinone and catechol and the oxidation currents of hydroquinone and catechol greatly increase at MWNT modified electrode in 0.20 M acetate buffer solution (pH 4.5). The oxidation peaks of hydroquinone and catechol merge into a large peak of 302 mV (vs. Ag/AgCl, 3 M NaCl) at bare glassy carbon electrode. The two corresponding well‐defined oxidation peaks of hydroquinone in the presence of catechol at MWNT modified electrode occur at 264 mV and 162 mV, respectively. Under the optimized condition, the oxidation peak current of hydroquinone is linear over a range from 1.0×10−6 M to 1.0×10−4 M hydroquinone in the presence of 1.0×10−4 M catechol with the detection limit of 7.5×10−7 M and the oxidation peak current of catechol is linear over a range from 6.0×10−7 M to 1.0×10−4 M catechol in the presence of 1.0×10−4 M hydroquinone with the detection limit of 2.0×10−7 M. The proposed method has been applied to simultaneous determination of hydroquinone and catechol in a water sample with simplicity and high selectivity.

Journal

ElectroanalysisWiley

Published: Jan 1, 2005

Keywords: ; ; ; ;

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create folders to
organize your research

Export folders, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off