Equations for the peak current and the peak-to-peak distances of the 0 Sth-, lst-, 15th-, 2nd-and 2 Sth-order derlvatwes of current with respect to time m linear potential sweep adsorption voltammetry were evaluated for a reversible mterfaclal reactIon The hrnlts of detectIon of the method and Its denvatwe technique were analysed theoretically It IS concluded that lo-" mol IF' of substance can be determined usmg conventIonal linear potential sweep adsorption voltammetry The hmrt of detection of denvatwe adsorptlon voltammetry may be at least one order of magmtude lower Keyword Stripping voltammetry, Voltammetry, Adsorption, Denvative current, Reversible interfacial reactIon Adsorption voltammetry IS a relatively new and very sensltlve method sultable for the ultratrace determination of orgamc compounds and inorganic ions through their complexes [1,2] The analyte 1s first preconcentrated by adsorptlon on a working electrode One of the most common measurmg techmques used IS linear potential sweep adsorption voltammetxy Ions or compounds at concentrations as low as lo-" mol 1-l can be detected In this laboratory, adsorption voltammetry of electroactlve and -mactlve ions of metal and non-metal elements has been studied with a conventional electrode and with an ultramicroelectrode Also, the theoretlcal background of the amount adsorbed m the preconcentratlon step and the techniques of integer and half-mteger derivative linear potential sweep voltammetry have been investigated [3-251 At least one order of magnitude decrease m the hmlt of detec-