Elimination Procedure as a Novel and Promising Mathematical Approach in Voltammetric Methods

Abstract

In the contribution, it has been demonstrated that Elimination Voltammetry with Linear Scan (EVLS) introduces an enhancement of the linear sweep and/or cyclic voltammetric results, and provides information about the type of the currents involved in the considered process. An extension of EVLS has been developed for any combination of scan rates (integers) for six elimination functions that are capable of conserving or eliminating of some voltammetric current components. Simple procedure to obtain the necessary coefficients from the chosen scan rates has been reported. In addition, the calculation and discussion of the relative error of elimination function (REEF) have been presented. The verification of the presented calculations has been done by studying different ratios of scan rates for reduction and oxidation processes of Cd(II) at a hanging mercury drop electrode (HMDE).

Oxidation of 6‐Benzylaminopurine‐Copper(I) Complex on Pencil Graphite Electrode

“…At the beginning of the process, when there are no copper ions in the measuring solution, BAP is adsorbed on the electrode surface (Figure 2a), as suggested by EVLS measurements (peak‐counterpeak signal). In these experiments, the theory of elimination voltammetry 11,20–23 was applied for linear sweep voltammograms of 1×10 −5 mol L −1 BAP in 1 % (v/v) of ethanol recorded at scan rates of 200 mV s −1 , 400 mV s −1 and 800 mV s −1 . The elimination function (E4) with simultaneous elimination of charging and kinetic current components and conservation of the diffusion current component was used.…”

“…Voltammograms are smoothed and baseline‐corrected by means of some homemade programs implemented in Matlab 19. The LSV data obtained at different scan rates and the values of the elimination coefficients were exported into Microsoft Excel, in which they were further processed by means of EVLS 20. The elimination function E4, where the diffusion current is conserved and the kinetic and charging currents are eliminated, was selected for the evaluation of the measurement 21.…”

“…The theoretical relative error of the elimination function (REEF) is dependent on the scan rates ratio and the elimination function selected. In the case of elimination function E4 with the scan rates ratio based on multiples of two, the E4‐REEF calculated is 21.80 20.…”

Comparative Electrochemical and Spectroscopic Studies of I‐Motif‐forming DNA Nonamers

“…The EVLS, based on processing total voltammetric currents measured at different electrode polarization rates, can eliminate any current component, for which its dependence on scan rate is known . The most used approach guaranteeing the greatest sensitivity, is the elimination function E4, which eliminates simultaneously charging and kinetic current components ( I c and I k ) and conserves the diffusion current component I d .…”

MATLAB in electrochemistry: A review

“…great variety of complexation systems have also been investigated by different electroanalytical techniques and MCR-ALS[174][175][176][177][178][179][180][181][182][183][184][185].1.4. Small molecule-biomacromolecule interactionsIn general, there are many examples of complex reactions for which it is not only important to analyze the reactants but also the products.…”