The flat surfaced membrane coated mercury electrode as analytical tool in the continuous voltammetric analysis |
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Authors: | E Pungor G Nagy Zs Fehér |
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Institution: | 1. Institute of General and Analytical Chemistry, Technical University of Budapest, Budapest (Hungary);2. EGYT Pharmacochemical Works, Budapest (Hungary) |
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Abstract: | Specific analytical problems often arise which can be easily solved if a mercury electrode of constant surface area is used as voltammetric sensor. In this work a membrane covered mercury electrode was prepared and used in solving various analytical tasks. One of them was the determination of water hardness. A sample injection method was developed applying EDTA reagent and a flow-through analytical system. Two different voltammetric enzyme electrodes (measuring glucose and L-amino acid) were prepared by using the membrane covered mercury electrode as base sensor. The application of the enzyme electrode in flow-through circumstances was proved to be very advantageous in determining selectively L-DOPA in the presence of the D-form. |
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