Electrooxidation of iodide in the presence of 4-hydroxycoumarin: application to a simple coulometric titration of 4-hydroxycoumarin. |
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| Authors: | Davood Nematollahi Ali Hamzehloei Mehdi Hesari Javad Rahimi |
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| Institution: | Department of Chemistry, Faculty of Science, University of Bu-Ali-Sina, Hamadan, Iran. nemat@basu.ac.ir |
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| Abstract: | The electrochemical oxidation of iodide ion in the presence of 4-hydroxycoumarin (1) was studied using cyclic voltammetry and controlled-potential coulometry. The result indicates that the resulting iodine takes part in a halogenation reaction and reacts with 4-hydroxycoumarin (1). According to the obtained results, a new and simple coulometric titration method with potentiometric end-point detection for the determination of 4-hydroxycoumarin (1) is presented. In the presented method, 2-200 micromol of 4-hydroxycoumarin (1) was successfully determined. |
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