Polarography

Polarography is an electrochemical method of analysis based on studying the dependence of current on voltage in an electrochemical cell with a linear voltage sweep.

Polarography allows you to determine the concentration of ions in a solution by the magnitude of the diffusion current that occurs during the reduction or oxidation of ions at the indicator electrode.

The polarography method was proposed by the Czech chemist Jaroslav Heyrovsky in 1922. He used a mercury dropping electrode as an indicator electrode.

A polarographic cell consists of an indicator electrode (usually a mercury dripping electrode), an auxiliary electrode, and an electrolyte. When the voltage changes linearly between the electrodes, the dependence of the current on the voltage is recorded - a polarographic curve.

Polarography is widely used to determine the concentration of metal ions, organic and inorganic compounds in solutions.

Polarography is an analytical method that is used to determine the concentration of various substances in a solution. It is based on the use of an electrochemical method, which allows you to measure the current passing through a solution when its potential changes.