Kinetic methods of analysis - chemical analysis methods that use the relationship between the reaction rate and the concentration of reacting substances. The analyte can be consumed during the reaction, be its catalyst , as well as an activator or inhibitor of the action of the catalyst. Kinetic methods of analysis are characterized by high sensitivity, which is especially true for determining the concentration of ions of certain metals. Kinetic methods are used to determine trace elements, insignificant concentrations of impurities in metals and their alloys , in water and substances of high purity.