Results 261 to 270 of about 63,119 (309)

Amperometric Glucose Biosensors Based on Glassy Carbon and SWCNT‐Modified Glassy Carbon Electrodes

Electroanalysis, 2007
AbstractDifferent carbonaceous materials, such as single‐walled carbon nanotubes (SWCNTs) and glassy carbon submitted to an electrochemical activation at +1.80 V (vs. SCE) for 900 s, have been used with the aim of comparing their performances in the development of enzyme electrodes.
I. Carpani, SCAVETTA, ERIKA, TONELLI, DOMENICA   +2 more
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Mercury nucleation on glassy carbon electrodes

Analytica Chimica Acta, 1997
Abstract The amount of mercury, deposited on a glassy carbon electrode at various potentials during the first 200 ms of electrolysis, has been determined by constant current coulometric stripping potentiometry. Eight microliter samples, containing approximately 4 M chloride, were placed on top of a combined glassy carbon, Ag counter and Ag AgCl
Eskil Sahlin, Daniel Jagner, Roongroje Ratana-ohpas   +2 more
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Electrochemical studies on glassy carbon electrodes

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1973
Summary Rate constant measurements for charge transfer processes at various electrodes show the general sequence k s (Pt)> k s (glassy carbon)> k s (wax-impregnated graphite) > k s (carbon paste). Maximum rates on glassy carbon electrodes have been observed after treatment with chromic acid, except for the reduction of iodate ion, where ...
R.J. Taylor, A.A. Humffray
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Direct electrochemistry of catalase on glassy carbon electrodes

Bioelectrochemistry, 2002
Catalase was investigated as a possible catalyst of the electrochemical reduction of oxygen on glassy carbon electrodes. The presence of catalase dissolved in solution only provoked a moderate current increase, which was fully explained by the catalase-catalysed disproportionation of hydrogen peroxide (Scheme I).
M E, Lai, A, Bergel
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Redox behavior of biofilm on glassy carbon electrode

Bioelectrochemistry, 2011
Marine and freshwater biofilm usually shift the open circuit potential (OCP) of stainless steel towards the electropositive direction by +450 mV vs SCE. The nature of oxide film and bacterial metabolism were also correlated with ennoblement process by various investigators.
D, Sridharan, S P, Manoharan, N, Palaniswamy   +2 more
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Measurements on glassy-carbon electrodes in saline

Medical & Biological Engineering & Computing, 1977
Results of measurements on glassy carbon used as physiological measuring electrodes and as stimulating electrodes are presented. The frequency dependence of the electrode impedance is shown to be comparable with that of metallic electrodes. Because of its inertness to body tissue, the glassy carbon electrode appears to have favourable properties for ...
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Electrochemical study of ricin at glassy carbon electrode

The Analyst, 2013
Ricin, Ricinus communis agglutinin 60 - RCA 60, is a deadly phytotoxic protein which inhibits ribosomes (class II), and there is no known effective antidote in living organisms. Ricin is composed of two polypeptide chains, A and B, linked covalently by a single disulfide bond.
Williame F, Ribeiro, Daniel J E, da Costa, Anabel S, Lourenço, Ilanna C, Lopes, Everaldo P, de Medeiros, Giancarlo R, Salazar-Banda, Valberes B, do Nascimento, Mário C U, de Araújo   +7 more
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Surface preparation of glassy carbon electrodes

Analytica Chimica Acta, 1988
Abstract Recent work on glassy carbon electrodes for various applications is reviewed. Activation of glassy carbon electrodes by different types of polishing, heat treatment, and electrochemical methods yields enhanced rates of electron transfer.
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UV/ozone pretreatment of glassy carbon electrodes

Journal of Electroanalytical Chemistry, 2001
A commercial UV/ozone cleaning device is investigated for use in pretreating glassy-carbon (GC) electrodes. In combination with alumina polishing, UV/ozone pretreatment produces electrodes with high activity for oxidation of catecholamines and ascorbic acid.
Junfeng Zhou, David O. Wipf
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Electrochemistry of ABTS at Glassy Carbon Electrodes

Chinese Journal of Chemical Physics, 2011
The electrochemical and the mass transport behavior of ABTS2−/ABTS.− (2,2′-azinobis(3-ethylbenzothiazoline-6-sulfonate)) redox couple at glassy carbon electrode (GCE) in phosphate buffer solution (PBS, pH=4.4) is studied in detail by cyclic voltammetry combined with rotating disk electrode system.
Han Zeng, Zhi-qiang Tang, Ling-wen Liao, Jing Kang, Yan-xia Chen   +4 more
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