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2. Applications of polarographic techniques in analysis
Polarographic techniques are mainly based on the plotting of current-potential curves, known as polarograms. Before describing the different techniques, their uses and applications, it is necessary to present the general principle of polarogram plotting common to all techniques, and the equipment required for their implementation.
2.1 General principle of polarogram plotting and equipment
Polarographic techniques are implemented by controlling the potential of the mercury-indicating electrode (DME, HMDE or TFME) where the oxidation or reduction reactions to be produced on an analyte in solution (inorganic or organic species present as a cation, anion or molecule) are to take place. They are generally based on the use of a three-electrode set-up immersed in the...
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Applications of polarographic techniques in analysis
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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