- Title
- Construction and characterization of carbon paste ultra-microelectrodes
- Creator
- Oni, Joshua, Westbroek, Philippe, Nyokong, Tebello
- Subject
- To be catalogued
- Date
- 2001
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/291531
- Identifier
- vital:56884
- Identifier
- xlink:href="https://doi.org/10.1016/S1388-2481(01)00212-0"
- Description
- The construction and characterization of carbon paste ultra-microelectrodes is reported. Besides a disc-shaped electrode, a carbon paste band electrode is studied. It was found that for both electrode configurations steady-state currents were obtained but that with the type of electrode material used for the band electrode, the upper limit of ultra-microelectrode dimensions, which could be used was 100–150 μm. Smaller dimensions for the band electrodes resulted in a high resistance due to the limited conductivity of the carbon paste, when using the optimal paste composition. With cyclic voltammetry, the oxidation of [Fe(CN)6]4− was studied at individual constructed electrodes and at ensembles of individual electrodes. Detection limits of less than 10−6moll−1 were obtained. Using the data of the same curves it was possible to test if the electrodes have errors and about 20% of the constructed electrodes did not pass this test. Finally it was found that these electrodes show good stability.
- Format
- computer, online resource, application/pdf, 1 online resource (5 pages), pdf
- Publisher
- Elsevier
- Language
- English
- Relation
- Electrochemistry Communications, Oni, J., Westbroek, P. and Nyokong, T., 2001. Construction and characterization of carbon paste ultra-microelectrodes. Electrochemistry communications, 3(9), pp.524-528, Electrochemistry Communications volume 3 number 9 p. 524 2001 1873-1902
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the Elsevier Terms and Conditions Statement (https://www.elsevier.com/legal/elsevier-website-terms-and-conditions)
- Rights
- Closed Access
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Nyokong, Tebello (Distinguished Professor)
RU Department of Chemistry
| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details Download | SOURCE1 | Construction and characterization of carbon paste ultra-microelectrodes.pdf | 602 KB | Adobe Acrobat PDF | View Details Download |