Results 221 to 230 of about 28,156 (262)
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Percolation behaviors of model carbon black pastes
Soft Matter, 2018The percolation behaviors of a series of high-structured carbon black (CB) pastes (CB weight fractions 10–25 wt%, ethyl cellulose as the binder, α-terpineol as the solvent) were systematically investigated using analyses of rheology and impedance spectra together with characterization via small-angle X-ray scattering (SAXS) and scanning electron ...
Jung-Shiun Jiang +3 more
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Acid Stability of Carbon Paste Enzyme Electrodes
Analytical Chemistry, 2006This note reports on the unusual protection of several enzymes against harsh pH conditions provided by carbon paste electrodes. Both glucose oxidase and polyphenol oxidase carbon paste amperometric biosensors display a remarkable resistance to acid deactivation compared to conventional biosensors prepared by electropolymeric entrapment of enzymes.
Joseph, Wang +2 more
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AC voltammetric carbon paste-based enzyme immunosensors
Biosensors and Bioelectronics, 2000Carbon paste electrodes, previously anodised in a basic media, are the basis for the development of a new voltammetric immunosensor device. Passive adsorption of the appropriate immunochemical reagent was performed onto the electrode surface. Alkaline Phosphatase labelled immunoglobulin was the tracer used in this work, 3-indoxyl phosphate being a very
C, Fernández-Sánchez +2 more
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Carbon Nanotube Purification: Preparation and Characterization of Carbon Nanotube Paste Electrodes
Analytical Chemistry, 2003Paste electrodes have been constructed using single-wall carbon nanotubes mixed with mineral oil. The electrochemical behavior of such electrodes prepared with different percentages of carbon nanotubes has been compared with that of graphite paste electrodes and evaluated with respect to the electrochemistry of ferricyanide with cyclic voltammetry ...
Valentini F +4 more
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Electroanalysis, 2004
AbstractA new carbon electrode material, obtained by mixing single wall carbon nanotubes (SWNTs) with a mineral oil binder is studied. Carbon nanotube pastes show the special properties of carbon nanotubes combined with the various advantages of composite electrodes such as a very low capacitance (background current) and the possibility of an easy ...
ANTIOCHIA, RICCARDA +4 more
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AbstractA new carbon electrode material, obtained by mixing single wall carbon nanotubes (SWNTs) with a mineral oil binder is studied. Carbon nanotube pastes show the special properties of carbon nanotubes combined with the various advantages of composite electrodes such as a very low capacitance (background current) and the possibility of an easy ...
ANTIOCHIA, RICCARDA +4 more
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Carbon-Filled Polymer Paste Reference Electrodes
Analytical Letters, 1985Abstract Inexpensive, disposable, carbon-filled polymer paste reference electrodes are reported. These electrodes are designed for use in conjuction with carbon-filled polymer paste ion-selective probes reported earlier. Attachment of integrated electronics is easily achieved.
P. J. Shoubridge +2 more
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Horseradish‐root‐modified carbon paste bioelectrode
Electroanalysis, 1989AbstractThe incorporation of horseradish roots into the carbon paste matrix results in an effective bioelectrode for sensing hydrogen peroxide. The response is based on the hydrogen peroxidase activity in the tissue. Because of the intimate contact between the biocatalytic and sensing sites, a very fast response is observed, as desired for practical ...
Joseph Wang, Meng Shan Lin
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Voltammetric studies on carbon paste electrodes
Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1984ABstract The relative importance of the carbon and the pasting liquid on the properties of the carbon paste electrode was studied using cyclic potential sweep voltammetry. The effect on electrode capacity and kinetics for the systems hexacyanoferrate (II) and hydroquinone in phosphate buffer of pH 6.8 was compared.
Csaba Urbaniczky, Kent Lundström
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Past Changes in Ocean Carbonate Chemistry
2011Over the period from 1750 to 2000, the oceans have absorbed about one-third of the carbon dioxide (CO2) emitted by humans. As the CO2 dissolves in seawater, the oceans become more acidic and between 1750 and 2000, anthropogenic CO2 emissions have led to a decrease of surface-ocean total pH (pH T) by ~0.1 units from ~8.2 to ~8.1 (see Chapters 1 and 3 ...
Richard E. Zeebe, Andy Ridgwell
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