a very short time period, so it is a good method to study the adsorption behavior at the electrode surface. By studying the chronopotentiometry graph of electrode after adsorption of iron ions, it is proved that the adsorption of platinum on iron ions exists. By studying the chronopotentiometry graph of platinum electrode adsorbing iodine, it is proved that the adsorption of iodine occurs in the form of iodine molecules, not iodine atoms. Chronocoulometry Chronocoulometry is an analytical method that has similar principle with chronoamperometry, but it monitors the relationship between charge and time instead of current and time. Chronocoulometry has the following differences with chronoamperometry: the signal increases over time instead of decreasing; the act of integration minimizes noise, resulting in a smooth hyperbolic response curve; and contributions from double-layer charging and absorbed species are easily observed. See also Electroanalytical methods Electrochemical skin conductance Potentiometric titration Voltammetry References Electroanalytical methods