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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| Format: | Article |
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Elsevier
1997
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| Online Access: | http://eprints.utm.my/664/ |
| _version_ | 1848889969042522112 |
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| 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. |
| building | UTeM Institutional Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-15T20:34:37Z |
| format | Article |
| id | utm-664 |
| institution | Universiti Teknologi Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T20:34:37Z |
| publishDate | 1997 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | utm-6642017-10-19T05:03:33Z http://eprints.utm.my/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 |
| 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 |
| title | 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_short | 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 |
| topic | QD Chemistry |
| url | http://eprints.utm.my/664/ http://eprints.utm.my/664/ http://eprints.utm.my/664/ |