The use of chemically modified electrodes in the testing of two Becium plant species for the ability to concentrate metal ions
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The two plants were Becium obavatum and Becium coddii. Megan Rose, Pr.Sci.Nat. Materials Scientist Neopak Research and Development South Africa
![The use of chemically modified electrodes in the
testing of Becium obavatum and Becium coddii for
the ability to concentrate metal ions
Research project submitted in partial compliance with the requirements for the B.Sc Hons degree, Department of Chemistry, University of the
Witwatersrand. Supervisor: Prof SW Orchard. June 1991.
[The author was an Honours Student, Department of Chemistry, University of the Witwatersrand when this project was undertaken ]
Megan Lee Crawcour
Abstract
Dehydrated leaf material of Becium obovatum and Becium coddii were analysed for the uptake of copper. Some of the plants of
this genus were known since the 1970s to have the ability to grow in soils having high levels of copper and nickel. The technique
of cyclic voltammetry used a carbon paste electrode made from graphite and the solvent n-pentadecane. The electrode
preparation was undertaken by grinding known quantities of the plant material with carbon and preparing a carbon paste
electrode. The testing failed to produce any noticeable complexing of copper under the conditions tested using cyclic
voltammetry. This could have been due to the lack of the complexing agent to survive the dehydration preparation technique or
selection of testing conditions outside the complexing or accumulating range.
Keywords
Cyclic voltammetry, copper complexation, Becium spp.](https://image.slidesharecdn.com/chemicallymodifiedelectrodes-150917123907-lva1-app6892/85/The-use-of-chemically-modified-electrodes-in-the-testing-of-two-Becium-plant-species-for-the-ability-to-concentrate-metal-ions-1-320.jpg)
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The use of chemically modified electrodes in the testing of two Becium plant species for the ability to concentrate metal ions
- 1. The use of chemically modified electrodes in the testing of Becium obavatum and Becium coddii for the ability to concentrate metal ions Research project submitted in partial compliance with the requirements for the B.Sc Hons degree, Department of Chemistry, University of the Witwatersrand. Supervisor: Prof SW Orchard. June 1991. [The author was an Honours Student, Department of Chemistry, University of the Witwatersrand when this project was undertaken ] Megan Lee Crawcour Abstract Dehydrated leaf material of Becium obovatum and Becium coddii were analysed for the uptake of copper. Some of the plants of this genus were known since the 1970s to have the ability to grow in soils having high levels of copper and nickel. The technique of cyclic voltammetry used a carbon paste electrode made from graphite and the solvent n-pentadecane. The electrode preparation was undertaken by grinding known quantities of the plant material with carbon and preparing a carbon paste electrode. The testing failed to produce any noticeable complexing of copper under the conditions tested using cyclic voltammetry. This could have been due to the lack of the complexing agent to survive the dehydration preparation technique or selection of testing conditions outside the complexing or accumulating range. Keywords Cyclic voltammetry, copper complexation, Becium spp.