Results 301 to 310 of about 30,772 (337)

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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Isopotential points in reverse square-wave voltammetry

Journal of Electroanalytical Chemistry, 2009
Isopotential points in reverse square-wave voltammetry of irreversible electrode reactions are described for the first time. Experimental results (obtained with Eu3+ in perchlorate solutions) and model calculations indicate that such an intersection appears when the net signals, recorded at increasing step potential, are plotted together.
Lovrić, Milivoj, Zelić, Marina
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Square-wave voltammetry of an aqueous solution of indigo

Journal of Electroanalytical Chemistry, 2000
Indigo is dissolved in water in the concentration of 5×10-5 mol/L and measured by highly sensitive adsorptive stripping square-wave voltammetry in order to determine the parameters of its electrochemical reduction. The formal potential of indigo/leucoindigo redox couple dissolved in the aqueous 0.7 mol/L KNO3, pH 12 (NaOH) is -0.566 ą 0.003 V vs Ag ...
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Square‐wave Amplitude Effect in Cathodic and Anodic Stripping Square‐wave Voltammetry

Electroanalysis, 2018
AbstractIn this paper a theoretical study of stripping processes at planar electrodes under conditions of square‐wave voltammetry is presented. A mechanistic examination for cathodic stripping electrode mechanisms, a simple anodic striping mechanism, and anodic stripping mechanisms coupled with adsorption equilibrium of the analyte are discussed using ...
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Square Wave Voltammetry

Analytical Chemistry, 1985
Janet G. Osteryoung, Robert A. Osteryoung   +1 more
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Square-wave voltammetry of some bipyridinium oximes

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1990
Abstract Four bis(1-methylpyridinium) oximes (toxogonin, HS-6, HI-6 and HGG-12, see Scheme 1) were analysed by square-wave voltammetry from l M aqueous solutions of NaNO 3 . Britton-Robinson buffers and HNO 3 , were used for pH adjustments between 1 and 10. In acidic media, the oximes exhibit two (toxogonin, HS-6 and HGG-12) or four (HI-6) SWV peaks.
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Square-wave voltammetry

ChemTexts, 2018
Valentin Mirceski, Sławomira Skrzypek, Leon Stojanov   +2 more
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