Results 161 to 170 of about 29,652 (200)

Quasireversible Maximum in Cathodic Stripping Square-Wave Voltammetry

Electroanalysis, 1999
The apparent reversibility of a redox reaction, together with the position of the quasireversible maximum, depend on the single complex kinetic parameter K, which is defined through the standard rate constant, diffusion coefficient of the ligand and frequency of the SW signal.
Mirčeski, Valentin, Lovrić, Milivoj
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Square-Wave Voltammetry of Cocaine

Analytica chimica acta, 2004
Electrochemical properties of cocaine and its metabolites such as benzoyl ecgonine (BE), ecgonine, and methyl ester ecgonine have been studied by means of square-wave voltammetry at a hanging mercury drop electrode. In a phosphate buffer at pH = 7 cocaine give rise to a single voltammetric peak at about - 1.490 V vs Ag/AgCl (3 mol/L KCl). At higher pH,
Pavlova, Valentina, Mirčeski, Valentin, Komorsky-Lovrić, Šebojka, Petrovska-Jovanović, Simka, Mitrevski, Blagoj   +4 more
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Square-wave voltammetry of berberine

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1987
Abstract Square-wave voltammetry (SWV) is applied to the quantitative analysis of berberine in supporting electrolytes of different pHs. In 0.1 mol/dm3 aqueous solution of NaCl+HCl (pH 2) the lowest detectable concentration of berberine is 0.006 μg/ml. The sensitivity of SWV can be increased by prolonged adsorptive accumulation of berberine.
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Square-wave voltammetry of copper–phenanthroline–tributylphosphate complex

The Analyst, 1994
The mechanism of synergetic adsorptive accumulation of copper(II)–phenanthroline– tributylphosphate (Cu–phen–TBP) complex at the mercury drop electrode surface has been described. The behaviour and characteristics of the CuII mixed ligand complex was studied and the relationship between the properties of square-wave response and the parameters of a ...
Mlakar, Marina, Čuljak, Ivan, Branica, Marko   +2 more
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Redox kinetics in cathodic stripping square‐wave voltammetry

Electroanalysis, 1995
AbstractSeveral redox systems with reactants which are immobilized at the electrode surface (EuSal complex, SeIV and SeIV in the presence of CuII, cysteine and p‐nitrophenol) were studied by square‐wave voltammetry to examine whether their redox kinetics can be measured by using the phenomenon of the ‘quasireversible maximum’.
Lovrić, Milivoj, Mlakar, Marina
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Electrochemical Semiconductor Analysis By Square Wave Voltammetry

ECS Meeting Abstracts, 2020
Studies in the past 20 years have utilized cyclic voltammetry (CV) for determining various electronic properties (e.g. density of states, electron carrier concentrations, trap state capacitances) of semiconducting titanium oxide films in photoelectrocatalytic systems such as dye-sensitized solar cells [1-4].
Bojan Miljkovic, Harry E Ruda
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Differential Multipulse and Square Wave Voltammetries

2016
The electrochemical techniques considered in this chapter present as a common feature that the recorded signal is the difference between the current (or converted charge) sampled at the end of consecutive potential pulses of a given sequence E 1, E 2, …, E p without the initial conditions being regained.
Ángela Molina, Joaquín González
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Cyclic Square Wave Voltammetry: Theory and Experimental

Analytical Letters, 1987
Abstract The voltage wave form of cyclic square wave voltammetry (CSWV) and its theory are presented, and experimental verification of theoretical work for CSWV is given. Indications are that the peak potential difference, Ep, of the differential current between the forward sweep and the reverse sweep is zero. Their peak heights have the same value for
Chen Xinsheng, Pu Guogang
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Ohmic drop effects in square-wave voltammetry

Journal of electroanalytical chemistry (1992), 2001
The ohmic drop effects in square-wave voltammetry (SWV) are studied theoretically. Three different electrode mechanisms are considered: (i) simple redox reaction of a dissolved redox couple, (ii) redox reaction with adsorption of reactant and (iii) surface redox reaction of a strongly immobilized redox couple.
Mirčeski, Valenti, Lovrić, Milivoj
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Square-wave adsorptive cathodic stripping voltammetry of pantoprazole

Journal of Pharmaceutical and Biomedical Analysis, 2003
Adsorption and reduction of pantoprazole were investigated by cyclic and square-wave voltammetry on a hanging mercury drop electrode in Britton-Robinson buffers at pH 2.0-11.0. The reduction process gave rise to a single peak within the entire pH range.
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