Results 201 to 210 of about 11,082 (256)

Determination of Melphalan Using Differential Pulse Voltammetry

Analytical Letters, 1985
Abstract The anodic oxidation of melphalan was studied on a glassy carbon disk electrode, either stationary or rotated, using a d.c. and a differential pulse potential program. The conditions have been found for a differential pulse voltammetric determination of the substance, with a detection limit of 1 × 10−6 mol 1 ...
Jiří Zima, Jiří Barek
exaly   +2 more sources

Differential Pulse Voltammetry

The Chemical Educator, 2015
Differential Pulse Voltammetry (DPV) was utilized in this lab experiment to detect phenol with a carbon electrode modified with polyeugenol and compared to a bare carbon electrode in acidic and basic conditions. The peak potentials for phenol detection were dependent on the pH value of the phenol solution was found.
Corrie Spradlin, Mary Sullivan, Stamatina Tolias, Suzanne Lunsford   +3 more
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Differential normal pulse voltammetry — theory

Journal of Electroanalytical Chemistry, 1980
Abstract The theory is presented of a modified form of differential pulse voltammetry, in which two potential steps with similar short duration are superimposed on the rest potential. Expressions for the current response to the double potential step are derived for quasireversible and totally irreversible charge-transfer processes of simple electrode
Koichi Aoki, Janet Osteryoung, Robert A. Osteryoung   +2 more
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Cyclic voltammetry and differential pulse voltammetry of rescinnamine

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1986
Abstract Two redox processes can be4 observed for rescinnamine by cyclic voltammetry. The electroactive group is identified as the 3,4,5-trimethoxycinnamic. A mechanism including a homogenous dimerization reacyion following the electron transfer is proposed for the redoz process which occurs at less negative potentials, and the rate constant for the ...
M. Rueda, E. Roldán, D. González-Arjona, M. Sánchez   +3 more
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Double differential pulse voltammetry

Journal of Electroanalytical Chemistry, 1994
Abstract From the solution obtained in previous work for the faradaic response to a triple pulse of potentials, the double differential pulse technique can be defined through the equation I ddp = i 3 − 2 i 2 + i 1 , where i j ( j = 1, 2, 3) is the current corresponding to the potential E j .
L. Camacho, J.J. Ruiz, A. Molina, C. Serna   +3 more
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Evaluation of differential pulse voltammetry at carbon electrodes

Talanta, 1983
The background and analytical responses of differential pulse voltammetry at carbon electrodes have been evaluated. Transient currents associated with small potential steps have been examined and are attributed mainly to redox reactions of various groups on the electrode surface.
J, Wang, B A, Freiha
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Theory of differential normal pulse voltammetry

Electrochimica Acta, 1982
Abstract An analytical solution is presented for the case of double potential step chronoamperometry at a stationary planar electrode for the case of heterogeneous charge transfer control. Extension of the result to multiple potential steps gives the current—potential response for differential normal pulse voltammetry.
Milivoj Lovrić, Janet Osteryoung
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Thin-layer differential pulse voltammetry

Analytical Chemistry, 1977
The applicability of differential pulse anodic stripping voltammetry to thin-layer electrodes is demonstrated with PbZ+, CdZ+, Zn2+, CuZf, and TI'. Typical calibration curves are linear over a range of 30 to 600 ng/mL with a detection limit of 10 ng/mL. Samples of blood, soybean, and oyster were analyzed for lead.
Thomas P. DeAngelis, Rodney E. Bond, Elwood E. Brooks, William R. Heineman   +3 more
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Reverse Differential Pulse Voltammetry and Polarography

Analytical Chemistry, 1995
In this paper we obtain the analytical solution for the reverse differential pulse (RDP) technique for a slow electronic transfer process, starting from expressions obtained previously for the faradaic response to a triple potential pulse. The solutions are valid for the planar approximations of a static mercury drop electrode and of a dropping mercury
Luis. Camacho, Juan Jose. Ruiz, Carmen. Serna, Francisco. Martinez-Ortiz, Angela. Molina   +4 more
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Differential pulse voltammetry at microdisk electrodes

Electrochimica Acta, 2005
Expressions for reversible differential pulse (DP) voltammograms at microdisk electrodes were established from experimental results as a function of pulse electrolysis parameters. Three expressions were computed numerically, depending on the electrode radius and varying the pulse interval, tau.
Legeai, Sophie, Chatelut, Michelle, Vittori, Olivier   +2 more
openaire   +2 more sources