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3. Polarography theory
The theory of polarography dealt with in this section will focus on the basic principles of classical polarography for describing recorded polarograms. In fact, the study of all polarograms is necessary when research into the reaction mechanism is required, whereas the simple measurement of the limiting current is sufficient for analysis. The peculiarity of the mercury drop electrode has posed some computational problems when equating the measured currents, and the most rigorous solutions take into account the expansion of the drop and its sphericity. In what follows, adsorption is assumed to be absent; its influence will be seen in paragraph .
3.1 Diffusion laws applied to a mercury electrode
Apart from the weak convection due to the steady...
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Polarography theory
Bibliography
- (1) - HEYROVSKY (J.) - Electrolysis with a dropping mercury cathode. Part 1 : Deposition of alkali and alkaline earth metals (Électrolyse avec une cathode à goutte de mercure. Partie 1 : Déposition des métaux alcalins et alcalino-terreux). - Chem. Listy, 16, p. 256 (1922) ; Phil. Mag, 45, p. 303 (1923).
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Websites
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Suppliers of equipment for the application of polarographic techniques
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With mercury drop electrode
Metrohm http://www.metrohm.fr
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Directory
Manufacturers – Suppliers – Distributors
Various suppliers offer equipment for polarographic methods of analysis, either with dedicated equipment specifically for polarographic methods (table 1 ), or with modular systems comprising a stand for the mercury drop electrode combined with a potentiostat not specific...
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