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Cathodic stripping voltammetry of copper-complexed reactive dyes at a hanging mercury drop electrode : reactive violet 5

Reactive Violet 5 and its hydrolysis product, which is produced as a side product in the dyeing process, can be determined in an admixture at sub-ppb levels by cathodic stripping voltammetry because the potentials of their azo reduction peaks are separated sufficiently. For both dyes, at intermediat...

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Main Authors:	Fogg, Arnold G., Rahim, A., Yusoff, H. M., Ahmad, Rahmalan
Format:	Article
Published:	Elsevier 1997
Subjects:	QD Chemistry
Online Access:	http://eprints.utm.my/id/eprint/664/ http://dx.doi.org/10.1016/S0039-9140(96)02014-0
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id	my.utm.664
record_format	eprints
spelling	my.utm.6642017-10-19T05:03:33Z http://eprints.utm.my/id/eprint/664/ Cathodic stripping voltammetry of copper-complexed reactive dyes at a hanging mercury drop electrode : reactive violet 5 Fogg, Arnold G. Rahim, A. Yusoff, H. M. Ahmad, Rahmalan QD Chemistry Reactive Violet 5 and its hydrolysis product, which is produced as a side product in the dyeing process, can be determined in an admixture at sub-ppb levels by cathodic stripping voltammetry because the potentials of their azo reduction peaks are separated sufficiently. For both dyes, at intermediate pH values the azo peak is preceded by a complexed -copper reduction peak at a less negative potential, which aids the identification of the dyes. The use of pH 6 EDTA buffer removes the complexed-copper peak, as does the use of an acidic buffer (pH < 3). This unusual use of EDTA as a pH buffer facilitates the determination of mixtures of the dye and its hydrolysis product. Elsevier 1997-01 Article PeerReviewed Fogg, Arnold G. and Rahim, A. and Yusoff, H. M. and Ahmad, Rahmalan (1997) Cathodic stripping voltammetry of copper-complexed reactive dyes at a hanging mercury drop electrode : reactive violet 5. Talanta, 41 (1). pp. 125-129. ISSN 0039-9140 http://dx.doi.org/10.1016/S0039-9140(96)02014-0 doi:0.1016/S0039-9140(96)02014-0
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	QD Chemistry
spellingShingle	QD Chemistry Fogg, Arnold G. Rahim, A. Yusoff, H. M. Ahmad, Rahmalan Cathodic stripping voltammetry of copper-complexed reactive dyes at a hanging mercury drop electrode : reactive violet 5
description	Reactive Violet 5 and its hydrolysis product, which is produced as a side product in the dyeing process, can be determined in an admixture at sub-ppb levels by cathodic stripping voltammetry because the potentials of their azo reduction peaks are separated sufficiently. For both dyes, at intermediate pH values the azo peak is preceded by a complexed -copper reduction peak at a less negative potential, which aids the identification of the dyes. The use of pH 6 EDTA buffer removes the complexed-copper peak, as does the use of an acidic buffer (pH < 3). This unusual use of EDTA as a pH buffer facilitates the determination of mixtures of the dye and its hydrolysis product.
format	Article
author	Fogg, Arnold G. Rahim, A. Yusoff, H. M. Ahmad, Rahmalan
author_facet	Fogg, Arnold G. Rahim, A. Yusoff, H. M. Ahmad, Rahmalan
author_sort	Fogg, Arnold G.
title	Cathodic stripping voltammetry of copper-complexed reactive dyes at a hanging mercury drop electrode : reactive violet 5
title_short	Cathodic stripping voltammetry of copper-complexed reactive dyes at a hanging mercury drop electrode : reactive violet 5
title_full	Cathodic stripping voltammetry of copper-complexed reactive dyes at a hanging mercury drop electrode : reactive violet 5
title_fullStr	Cathodic stripping voltammetry of copper-complexed reactive dyes at a hanging mercury drop electrode : reactive violet 5
title_full_unstemmed	Cathodic stripping voltammetry of copper-complexed reactive dyes at a hanging mercury drop electrode : reactive violet 5
title_sort	cathodic stripping voltammetry of copper-complexed reactive dyes at a hanging mercury drop electrode : reactive violet 5
publisher	Elsevier
publishDate	1997
url	http://eprints.utm.my/id/eprint/664/ http://dx.doi.org/10.1016/S0039-9140(96)02014-0
_version_	1643643155392757760
score	13.211869

Cathodic stripping voltammetry of copper-complexed reactive dyes at a hanging mercury drop electrode : reactive violet 5

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