amperometrisk

Amperometrisk refers to a method of quantitative chemical analysis that measures the electric current flowing through an electrochemical cell as a function of applied potential. This current is directly proportional to the concentration of the analyte of interest. In amperometry, a specific potential is applied to a working electrode, causing the analyte to undergo an oxidation or reduction reaction. The resulting current is then measured.

The principle behind amperometrik analysis is Faraday's laws of electrolysis, which state that the amount of substance deposited or liberated at an electrode is directly proportional to the quantity of electricity passed through the electrolyte. In amperometry, the current serves as a measure of the rate of the electrochemical reaction, and thus the concentration of the analyte. By varying the applied potential, different species can be selectively detected.

Amperometrisk techniques are widely used in various fields, including environmental monitoring, clinical diagnostics, and industrial process control. Common applications include the measurement of dissolved oxygen, glucose, and other biologically relevant molecules. The sensitivity and specificity of amperometrik methods can be enhanced by using specific electrode materials or by coupling them with chromatographic separation techniques. The analysis is typically performed using an instrument called a potentiostat, which controls the applied potential and measures the resulting current.