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http://repository.aaup.edu/jspui/handle/123456789/75
Title: | Voltammetric behavior of 5-nitrobenzimidazole at DNA-modified glassy carbon electrodes |
Authors: | nizam diab |
Keywords: | 5-nitrobenzimidazole modified electrode DNA-modified electrode differential pulse stripping voltammetry cyclic voltammetry |
Issue Date: | 2014 |
Publisher: | International Journal of Chemistry |
Abstract: | The voltammetric behavior of 5-nitrobenzimidazole was investigated using cyclic voltammetry and differential-pulse stripping voltammetry at bare glassy carbon (GC) electrodes and DNA-modified glassy carbon (DNA-GC) electrodes. A comparison between the current responses for the 5-nitrobenzimidazole at the modified DNA-GC and unmodified GC electrodes, it was showed that the DNA- modified electrode exhibits a significant enhancement of the voltammetric current response with a better peak shape. Optimization of the pre-concentration process at the DNA-modified surface led to a significant enhancement of the voltammetric current response and a better-defined peak shape. A linear relationship between the peak current and 5-nitrobenzimidazole concentrations was observed in the range 1.0–30.0 µM, with a slope a detection limit of 0.36 µM, with r = 0.998. |
URI: | http://repository.aaup.edu/jspui/handle/123456789/75 |
Appears in Collections: | Faculty & Staff Scientific Research publications |
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