Application of Stripping Voltammetry to the Determination of Guanethidine |
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| Authors: | Ensaf A. Kasim Mohamed A. Ghandour Mohamed T. El-Haty Mahasen M. Ahmed |
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| Affiliation: | (1) Chemistry Department, Faculty of Education, Assiut University, El-Kharga Oasis, Egypt, EG;(2) Chemistry Department, Faculty of Science, Assiut University, Assiut, 71516, Egypt, EG;(3) Chemistry Department, Faculty of Science, South Valley University, Aswan, Egypt, EG |
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| Abstract: | Summary. Adsorptive stripping voltammetry for the determination of guanethidine is employed. The drug is adsorbed onto the hanging mercury drop electrode, and the reduction current of the accumulated drug is measured by scanning the potential in the cathodic direction. The adsorption and redox behaviour are explored by cyclic voltammetry. Optimum experimental conditions include preconcentration potential, solution pH, potential scan rate, and preconcentration time. A detection limit of guanethidine of 0.992 ng/cm3 was obtained. Corresponding author. E-mail: ensafa@yahoo.com Received March 29, 2002; accepted April 12, 2002 |
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| Keywords: | . Stripping voltammetry Hanging mercury drop electrode Cyclic voltammetry Guanethidine. |
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