Results 271 to 280 of about 11,919 (307)

Stepped-potential voltammetries at stationary electrodes Part 1. Differential staircase, differential pulse and square-wave voltammetries

Journal of Electroanalytical Chemistry, 1995
Abstract Differential pulse voltammetry (DPV) and related techniques are examined. The proposed treatment is valid for any pulse method performed at stationary plane or spherical electrodes in the case of simple reversible reactions with both redox forms soluble in solution.
Krulic, Denise, Fatouros, Nicolas, M. El Belamachi, M.   +2 more
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Determination of promethazine by anodic differential-pulse voltammetry

Analytica Chimica Acta, 1984
Abstract A differential-pulse voltammetric method is described for the determination of promethazine hydrochloride. The method is based on the anodic oxidation of promethazine on a glassy carbon electrode at + 0.64 V vs. SCE in Prideaux buffer of pH 2.3.
R.I. Baxter, G. Svehla, B. Kerr, A.D. Woolfson   +3 more
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Anodic Stripping Differential Alternative Pulses Voltammetry and Applications

ECS Transactions, 2008
A modification of the voltammetric technique Differential Alternative Pulses Voltammetry (DAPV) reported by the authors earlier (1) is presented. The potential-time waveform and the signal processing algorithm were properly modified allowing the performance of the DAPV in anodic stripping mode (ASDAPV).
Zlatev, Roumen, K., Stoytcheva, Margarita, S., Valdez, Benjamin, Magnin, Jean-Pierre, Velkova, Zdravka   +4 more
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Internal standards in differential pulse anodic stripping voltammetry

Canadian Journal of Chemistry, 1991
The use of lead and cadmium as internal standards for each other in anodic stripping analysis was investigated. Although accuracy was not affected, precision was significantly improved. The surface active agents Triton-X 100 and starch affected the sensitivity of the anodic stripping procedure for lead and cadmium, leading to error if a calibration ...
Angelo Ransirimal Fernando, Byron Kratochvil   +1 more
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Subtractive differential pulse voltammetry following adsorptive accumulation of organic compounds

Talanta, 1983
Subtractive differential pulse voltammetry following adsorptive preconcentration of organic compounds at solid electrodes is described. Different preconcentration periods are used, and the difference between the oxidation (stripping) currents is recorded. Background currents which are independent of the preconcentration period cancel out. Combining the
J, Wang, B A, Freiha
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Direct Determination of Acetaminophen in Plasma by Differential Pulse Voltammetry

Journal of Pharmaceutical Sciences, 1978
A rapid, simple method for the direct determination of acetaminophen in plasma at toxic levels was developed. The method is based on the oxidation of the phenolic moiety of acetaminophen at a carbon paste electrode in a differential pulse voltammetric mode. Linear calibration curves are obtained from 20 to 400 microgram/ml.
J W, Munson, H, Abdine
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Determination of gallium traces by differential pulse anodic stripping voltammetry

Fresenius' Zeitschrift für analytische Chemie, 1988
The determination of gallium traces is carried out on the hanging drop mercury electrode in solutions of low ionic strength and in absence of complexing agents. At pH=3.2, where stable solutions are obtained, concentrations of 0.2 μg Ga l−1 are determinated with a standard deviation of 0.96% and a detection limit of 4 ng Ga l−1.
UDISTI, ROBERTO, PICCARDI, GIOVANNI
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Total antioxidant potential assay with cyclic voltammetry and/or differential pulse voltammetry measurements

Journal of Electroanalytical Chemistry, 2014
Abstract In the literature many different TAP assays are described. They use various analytical methods. However, it seems that natural methods of investigation of the redox reactions are electroanalytical techniques. Indeed, TAP has been already estimated potentiometrically and voltammetrically.
Bronisław K. Głód, Iwona Kiersztyn, Paweł Piszcz   +2 more
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Theory of differential pulse voltammetry at stationary planar electrodes

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1984
Abstract Differential pulse voltammetry (DPV) at stationary solid electrodes has the characteristic that the current after any given potential step is affected by all the preceding steps since the beginning of an entire sequence of potential, changes applies to one and the same electrode.
Koichi Aoki, Koichi Tokuda, Hiroaki Matsuda   +2 more
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Determination of cobalt by catalytic-adsorptive differential pulse voltammetry

Analytica Chimica Acta, 1996
Abstract A novel method is described for the determination of cobalt(II) by differential pulse voltammetry, based on accumulation of a cobalt complex, [CoSCNNO] + , on a hanging mercury drop electrode, followed by measurement of the catalytic current of the adsorbed complex. The effects of various experimental parameters on the catalytic current were
Gao, Z., Siow, K.S., Yeo, L.
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