A theory of square-wave voltammetry of surface-active, electroinactive compounds

Square‐Wave Voltammetry: A Review on the Recent Progress

“…Lovric conducted particularly interesting theoretical work in which SWV has been applied for the first time to analyze surface active, but redox inactive, species [26]. This work is particularly significant in contrast to the generally accepted implication that SWV effectively discriminates against the capacitive current.…”

“…While the latter is generally true, one must also take care for the appearance of tensammetric response under conditions of SWV, in particular when adsorption complicated electrode mechanisms are considered. A general qualitative criterion to differentiate the pure tensammetric response from the voltammetric response of an electrode reaction in which the reactant is partially adsorbed is established [26].…”

“…In the reviewed period significant contributions in the theory of SWV have been done by the research groups of Lovric [18][19][20][22][23][24][25][26][27][28][29], Molina [17,[30][31][32][33][34][35], Compton [36][37][38][39], Mirceski [40][41][42][43], Gulaboski [44][45][46][47], and others [48][49][50]. The theory refers to a variety of electrode mechanisms including dissolved or immobilized redox couples at macroscopic planar or microelectrodes, as well as processes undergoing in a restricted diffusion space.…”

Square‐Wave Voltammetry of Electroinactive Surfactants

“…Although some attempts of its application in the analysis of electroinactive surfactants were described 26, systematic studies of such a “new” method are not known. In the previous article from our laboratory 27 a basic theory of square wave voltammetry of surface‐active, electroinactive compounds was developed. It was shown that tensammetric/desorption peak originates from the difference in surface coverage during the forward and backward series of pulses of SWV signal.…”

“…In this article, experimentally obtained SW current – potential curves of model electroinactive surfactants Triton X‐100 and sodium dodecyl sulfate will be presented and treated in the light of previously published 27 and some new theoretical results.…”