A new method was developed for simultaneous determination of copper, lead, and cadmium, based on their voltammetric response at a carbon paste electrode modified with hexagonal mesoporous silica (HMS) immobilized quercetin (HMS-Qu/CPE). Compared with quercetin modified carbon paste electrode (Qu/CPE) and quercetin ionic liquid modified carbon paste electrode (Qu-IL/CPE), the HMS-Qu/CPE exhibite...

The electrochemical behaviour of hen-egg-white lysozyme (HEWL) was studied at the polarized water/1,2-dichloroethane interface. The voltammetric ion-transfer response was found to be dependent on the pH and ionic strength of the aqueous phase solution and also on the nature of the organic phase electrolyte anion. The current-pH behaviour of HEWL was dominated by the charge of the biomolecule at...

BACKGROUND Support vector regression (SVR) and Gaussian process regression (GPR) were used for the analysis of electroanalytical experimental data to estimate diffusion coefficients. RESULTS For simulated cyclic voltammograms based on the EC, Eqr, and EqrC mechanisms these regression algorithms in combination with nonlinear kernel/covariance functions yielded diffusion coefficients with highe...

BACKGROUND Lidocaine hydrochloride (LH) is one of the most extensively used local anesthetics and peripheral analgesics. Availability of a simple and sensitive assay method for this analyte in pharmaceutical preparations as well as development of new voltammetric detectors that can be applied in chromatographic systems for determination of this analyte in biological samples are of great importa...

The electrochemical behavior of isorhamnetin (ISO) at a glassy carbon electrode was studied in a phosphate buffer solution (PBS) of pH 4.0 by cyclic voltammetry (CV) and differential pulse voltammetric method (DPV). A well-defined redox wave of ISO involving one electrons and one proton appeared. The electrode reaction is a reactant weak adsorption-controlled process with a charge transfer coef...

Electrostatic interactions with metal ions are essential to the structural stability and polymorphism of oligonucleotides. This thesis describes the extended applications of a simple electrochemical protocol, based on the voltammetric response of multiplycharged transition metal cations ( [ R u ( N H ~ ) ~ ] ~ + ) bound electrostatically to DNAmodified surfaces, to explore the kinetics of metal...

In this work, we have used cyclic voltammetry to investigate the interfacial behavior of cocaine cutting agents at electrified liquid-liquid interface formed between a solution water and 1,2-dichloroethane phases. Among 27 chemical species adulterate street samples, only 8 were detectable in available potential window. These include procaine, lidocaine, levamisole, hydroxyzine, caffeine, phenyl...

Voltammetric studies of c-type cytochromes at clay-modified pyrolytic graphite electrodes have been undertaken as providing a good model for investigating interactions of proteins with soils. Different clays have been investigated according to their global charge, composition and hydrophobicity. The electrochemical behavior of either mitochondrial or bacterial cytochromes at these modified elec...