Abstract
A new type of carbon paste electrode (CPE) was made using ketotifen fumarate (C23H23NO5S; an antiasthmatic/antianaphylactic drug) and hexacyanoferrate. This electrode was constructed using an acidic solution of ketotifen fumarate and potassium hexacyanoferrate. For this purpose, ketotifen fumarate was dissolved in acidic solution (pH 1) and hexacyanoferrate was added by agitation, resulting in ketotifen–hexacyanoferrate (Ket–HCF) precipitate. The obtained precipitate was separated and introduced into carbon paste. The electrochemical behavior of Ket–HCF CPE was studied by cyclic voltammetry. A modified electrode shows one pair of peaks with surface-confined characteristics, with a 0.1-M phosphate buffer as supporting electrolyte. The effects of pH, alkali metal cations, and anions of supporting electrolytes on the electrochemical characteristics of modified electrodes were studied. The diffusion coefficients of hydrated K+ in film (D), the transfer coefficient (α), and the transfer rate constant for electrons (k s) were determined.
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Tabrizivand, G., Sabzi, R.E. & Farhadi, K. Preparation and characterization of a new carbon paste electrode based on ketotifen–hexacyanoferrate. J Solid State Electrochem 11, 103–108 (2007). https://doi.org/10.1007/s10008-005-0077-8
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DOI: https://doi.org/10.1007/s10008-005-0077-8