Results 211 to 220 of about 28,156 (262)
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Biocatalytic Carbon Paste Sensors Based on a Mediator Pasting Liquid
Analytical Chemistry, 2004The preparation and advantages of a new generation of carbon paste enzyme electrodes where the redox mediator acts also as the pasting liquid are described. The mediator pasting liquid concept is illustrated for amperometric biosensing of glucose in connection with either the tert-pentylferrocene or n-butylferrocene mediator/binder along with the ...
Nathan S, Lawrence +2 more
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Voltammetric determination of Celiptium with carbon paste and lipid-modified carbon paste electrodes
Analytica Chimica Acta, 1990Abstract The electrooxidation of the antitumour drug 2-methyl-9-hydroxyellipticinium (Celiptium) was investigated by cyclic, differential-pulse and adsorptive voltammetry at carbon paste (CPE) and lipid-modified carbon paste electrodes (LM-CPE). The influence of the paste composition, i.e., the ratio of graphite to binder, was studied in order to ...
Kauffmann, Jean-Michel +3 more
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Voltammetric study of glibenclamide at carbon paste and Sephadex-modified carbon paste electrodes
Analytical and Bioanalytical Chemistry, 2004The oxidative behaviour of the antidiabetic agent glibenclamide on a bare carbon paste electrode (CPE) and a Sephadex-modified carbon paste electrode (SMCPE) was explored by cyclic and differential pulse voltammetry (DPV). The analysis procedure consisted of an open circuit accumulation step in stirred sample solution of Britton-Robinson buffer (0.04 ...
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Metalloporphyrin containing carbon paste electrodes
Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1985Abstract Iron and manganese tetraphenylporphyrin chlorides can be dissolved in 1-nonanol and mixed into a carbon paste electrode which in aqueous buffer exhibits the classic metal(III/II) cyclic voltammetry. The voltammetric formal potential shifts negatively by 60 mV/pH unit, and enhanced, electrocatalytic currents are observed in the presence of ...
Esther S. Takeuchi, Royce W. Murray
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Smart cement paste with carbon nanotubes
2016Carbon nanotubes can be added to cementitious materials to create a multifunctional nanocomposite with excellent piezoresistive and strain-sensing properties. The use of carbon nanotubes provides high strain sensitivity and signal-to-noise ratio, which are ideal for fabricating self-sensing nanocomposite cement paste for applications to structural ...
UBERTINI, Filippo +2 more
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Determination of Roxarsone Using Carbon Paste and Amberlite LA2 Modified Carbon Paste Electrodes
Electroanalysis, 2000The methods for determination of the growth promoter 4-hydroxy-3-nitrobenzenearsonic acid (Roxarsone) in veterinary product and in poultry drinks have been developed using differential pulse voltammetry with carbon paste and Amberlite LA2 chemically modified carbon paste electrodes.
Rahmalan Ahamad +4 more
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Ensembles of carbon paste microelectrodes
Analytica Chimica Acta, 1999Abstract In this paper, the design of the carbon paste and reference microelectrodes and “carbon paste needle-microelectrodes” (CPNMEs) system is reported (including a 140 μm diameter carbon paste electrode, a 150 μm diameter Ag/AgCl reference electrode and a No. 9 syringe needle auxiliary electrode).
Yongde Zou, Jinyuan Mo
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Metal-dispersed carbon paste electrodes
Analytical Chemistry, 1992The preparation of metal-dispersed carbon paste electrodes, based on mixing an organic binder with metalized graphite, is described. Such electrodes combine the efficient electrocatalytic activity of metal microparticles with the attractive properties of carbon paste matrices.
Joseph. Wang +4 more
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Collection of Czechoslovak Chemical Communications, 2000
In order to obtain modified electrodes with phenothiazines and to develop electrochemical methods for their determination in pharmaceutical formulations, promazine maleate, promethazine maleate and levomepromazine, were studied by linear sweep voltammetry using different types of working electrodes: carbon paste, solid carbon paste and glass-like ...
Robert V. Sandulescu +3 more
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In order to obtain modified electrodes with phenothiazines and to develop electrochemical methods for their determination in pharmaceutical formulations, promazine maleate, promethazine maleate and levomepromazine, were studied by linear sweep voltammetry using different types of working electrodes: carbon paste, solid carbon paste and glass-like ...
Robert V. Sandulescu +3 more
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Chemically modified carbon paste and carbon composite electrodes
Electroanalysis, 1989AbstractCarbon paste electrodes and composite carbon electrodes modified by 20% silica gel (30 μm) within the electrode material exhibit many properties typical of a strand of carbon fiber microelectrodes in voltammetric measurements. Charged and uncharged species were studied on these electrodes; phenol, ferricyanide, and potassium ethylxanthogenate ...
Věra Stará, Miloslav Kopanica
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