Amperometric detection is an alternative to conductivity and UV/VIS detection.
It is mainly used to determine electroactive, i.e., oxidizable or reducible, compounds.
Typical applications of amperometric detection are sugars and sugar alcohols of all kinds as well as many anions (e.g., cyanide, sulfide, iodide, bromide), cations (e.g., amines, aromatic amino acids), and organic substances such as phenols, catecholamines, vitamins …