Adsorption of procaine at the mercury/electrolyte solution interface |
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| Authors: | Antonis Avranas Anastasia Konstantinou Aurora Mocanu Maria Tomoaia-Cotisel |
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| Institution: | 1. Laboratory of Physical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;2. Faculty of Chemistry and Chemical Engineering, University of Cluj-Napoca, 11, Arany Janos str., 3400 Cluj-Napoca, Romania |
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| Abstract: | The adsorption of the local anaesthetic procaine hydrochloride at the mercury/electrolyte interface solution is followed using capacitance measurements. The adsorption is studied at various procaine concentrations, in potassium chloride, potassium bromide or potassium fluoride used as supporting electrolytes, and at various pH values and temperatures. Procaine has basic properties with two acidity constants K. The results indicate the way the procaine molecules orientate at the interface. In all cases studied no hemimicelles or condensed film are observed. |
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