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Sonoelectroanalysis: investigation of bismuth-film-modified glassy carbon electrodes |
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| Authors: | Craig?E?Banks Jaanus?Kruusma Michael?E?Hyde Abdollah?Salimi |
| Institution: | (1) Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, UK;(2) Present address: Institute of Physical Chemistry, Tartu University, Jakobi 2, Tartu 51013, Estonia, and Environmental Protection Institute, Estonia Agricultural University, Akadeemia 4, Tartu 51003, Estonia;(3) Present address: Department of Chemistry, Faculty of Science, Kurdistan University, P.O. Box 416, Sanandaj, Iran |
| Abstract: | Bismuth-modified glassy carbon electrodes have been investigated for their suitability in sonoelectroanalysis. The stability of the bismuth film to the application of ultrasound was assessed via voltammetric and atomic force microscopy (AFM) studies which revealed little ablation at powers up to an intensity of 130 W cm–2 delivered from a 25-kHz sonic horn. Furthermore, bismuth-film-modified glassy carbon electrodes were evaluated for the sonoelectroanalytical quantification of zinc and cadmium. Detection limits of 2×10–7 M and 6×10–9 M respectively were found after a 60-s deposition time via an acoustically assisted deposition protocol. |
| Keywords: | Sonoelectroanalysis Bismuth film Ultrasound Stripping voltammetry Zinc Cadmium |
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