Results 271 to 280 of about 63,119 (309)

Surface injection catalysis at glassy carbon electrodes

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1989
Abstract Injection of solution species into glassy carbon electrodes has been monitored by Phase Detection Microscopy (PDM), and by sputter profiling and surface analysis. Electrochemical treatment in strongly alkaline solutions at positive voltage conditions caused swelling of the surface at local spots and eventual disruption of the surface with ...
William H. Smyrl, Radoslav T. Atanasoski, Ljiljana Atanasoska, Lynn Hartshorn, Kirk Nygren, Edward A. Fletcher   +5 more
openaire   +1 more source

Modification of Glassy Carbon Electrode with Pyridine

ECS Transactions, 2011
Glassy carbon electrodes were modified with pyridine by electrografting of the corresponding in situ generated diazonium cations. The diazonium cations formation from the 3-aminopyridine in acid media at room temperature was confirmed by UV spectroscopy. The presence of immobilized pyridine at the electrode surface was demonstrated by XPS measurements.
Julia Agullo, Mario Morin, Daniel Bélanger   +2 more
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Electrosorption of quercetin on glassy carbon electrode

Journal of Electroanalytical Chemistry, 2011
Abstract The present paper reports a concise study on the mechanism of electrosorption of quercetin (3,3′,4′,5,7-pentahydroxyflavone) molecule on glassy carbon (GC) electrode surface in 0.1 M sodium acetate–acetic acid buffer, in 90% methanol solution.
Boguslaw Pierozynski, Danuta Zielinska
openaire   +1 more source

Characterization of electrochemically pretreated glassy carbon electrodes

Analytical Chemistry, 1984
Un pretraitement electrochimique nettoie l'electrode de ses contaminants introduit au cours du polissage et entraine une oxydation superficielle qui influence certaines ...
Royce C. Engstrom, Vernon A. Strasser
openaire   +1 more source

Reduction of Carbon Dioxide on Modified Glassy Carbon Electrodes

Journal of The Electrochemical Society, 1999
Carbon dioxide in the atmosphere gives an important contribution to environmental pollution due to the progressive increase of its production everywhere from many sources. It is believed now that the capacity of the biosphere, due to absorption and transformation of CO{sub 2}, has been considerably exceeded and many attempts to overcome this problem by
R. M. Hernández, J. Márquez, O. P. Márquez, M. Choy, C. Ovalles, J. J. Garcia, B. Scharifker   +6 more
openaire   +1 more source

Voltammetric determination of pentachlorophenol at a glassy carbon electrode

The Analyst, 1988
An electroanalytical study of the pentachlorophenol oxidation process at a glassy carbon electrode in aqueous solution using different voltammetric techniques has been carried out. The results obtained by differential-pulse voltammetry allowed a method to be developed for the determination of pentachlorophenol in the ranges 1.0 × 10–5–10.0 × 10–5 and 2.
E, Chico Guijarro, P, Yañez-Sedeño, J M, Pingarron Carrazon, L M, Polo Díez   +3 more
openaire   +2 more sources

Electroanalytical study of nifedipine using activated glassy carbon electrode

Journal of Pharmaceutical and Biomedical Analysis, 1998
The electrochemical properties of nifedipine have been investigated in aqueous solution by linear sweep and cyclic voltammetry. The method is based both on the reduction and on the oxidation of the drug at a glassy carbon electrode activated by applying a new pre-treatment.
Özkan, Yalçın, Şentürk, Z., Özkan, S.A.   +2 more
openaire   +3 more sources

Glassy carbon electrodes

Carbon, 2001
Aleksandar Dekanski, Jasna Stevanović, Rade Stevanović, Vladislava M Jovanović   +3 more
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Anodic behavior of clioquinol at a glassy carbon electrode

Bioelectrochemistry, 2011
Clioquinol is an antifungal, antiprotozoal and an Alzheimer's disease drug with cytotoxic activity toward human cancer cells. The electrochemical behavior of clioquinol and its oxidation product was studied using cyclic, differential pulse and square-wave voltammetry over a wide pH range on a glassy carbon electrode.
Masoumeh, Ghalkhani, Isabel P G, Fernandes, Severino Carlos B, Oliveira, Saeed, Shahrokhian, Ana Maria, Oliveira-Brett   +4 more
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Electroanalysis of trimethoprim on metalloporphyrin incorporated glassy carbon electrode

Drug Testing and Analysis, 2010
AbstractTrimethoprim (TMP) is a bacteriostatic antibiotic mainly used in the prophylaxis and treatment of urinary tract infections. It belongs to the class of chemotherapeutic agents known as dihydrofolate reductase inhibitors. Its use is associated with idiosyncratic reactions, including liver toxicity and agranulocytosis.
Leena, Rajith, Krishnapillai Girish, Kumar   +1 more
openaire   +2 more sources