See Also: polarography(medicine)
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polarography (medicine)


polarography


An electrochemical technique for identifying and estimating the concentration of reducible elements by means of the dual measurement of the current flowing through an electrochemical cell (which contains the test solution) and the electrical potential between the two electrodes as the potential is increased at a constant rate by an external voltage source. As the voltage reaches the standard electrode potential of the test substance, there is a sharp increase in current flow. The indicator electrode is usually a dropping mercury electrode.