Ilkovic equation is a relation used in polarography relating the diffusion current (*i*_{d}) and the concentration of the depolarizer (*c*), which is the substance reduced or oxidized at the dropping mercury electrode. The Ilkovic equation has the form

Where *k* is a constant which includes Faraday constant, π and the density of mercury, and has been evaluated at 708 for max current and 607 for average current, *D* is the diffusion coefficient of the depolarizer in the medium (cm^{2}/s), *n* is the number of electrons exchanged in the electrode reaction, *m* is the mass flow rate of Hg through the capillary (mg/sec), and *t* is the drop lifetime in seconds, and *c* is depolarizer concentration in mol/cm^{3}.

The equation is named after the scientist who derived it, the Slovak chemist, Dionýz Ilkovič 1907-1980).

Generalic, Eni. "Ilkovic equation." *Croatian-English Chemistry Dictionary & Glossary*. 20 Oct. 2018. KTF-Split. {Date of access}. <https://glossary.periodni.com>.

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