Amperometry is an electrochemical technique used to measure the current produced by the oxidation or reduction of an analyte in solution. This method involves applying a constant voltage to an electrode, allowing the flow of electrons to be measured. The resulting current is directly proportional to the concentration of the target substance, making it useful for detecting various chemicals. This technique is commonly employed in fields such as environmental monitoring, clinical diagnostics, and food safety. By providing real-time analysis, amperometry helps in assessing the quality and safety of products, as well as in research applications for studying chemical reactions.