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  • 1
    Electronic Resource
    Electronic Resource
    The transfer of chloride ion across an anion exchange membrane (1996)
    Weinheim : Wiley-Blackwell
    Electroanalysis 8 (1996), S. 821-825 
    Details
    ISSN: 1040-0397
    Keywords: Chloride ion ; Ion transfer ; Anion exchange membrane ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The transfer of chloride ions into a low resistance anion exchange membrane (AEM) was investigated by cyclic voltammetry (CV) and electrochemical impedance spectra. In all cases, concentration polarization of C1- ions is exterior to the membrane. It controls the flux and produces the limiting currents: either steady state or transient (peak type) current. In CV experiments, when the size of the holes in the membrane was much smaller than the distance between membrane holes, the C1- anion transfer showed steady state voltammetric behavior. Each hole in the membrane can be regarded as a microelectrode and the membrane was equivalent to a microelectrode array in this condition. When the hole in the membrane was large or the distance between membrane holes was small, the CV curve of the C1- anion transfer across the membrane showed a peak shape, which was attributed to linear diffusion. In AC impedance measurement, the impedance spectrum of the membrane system was composed of two semicircles at low DC bias, corresponding to the bulk characteristics of the membrane and the kinetic process of ion transfer, respectively. The bulk membrane resistance increases with increasing DC bias and only one semicircle was observed at higher DC bias. The parameters related to kinetic and membrane properties were discussed.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/elan.1140080822
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  • 2
    Electronic Resource
    Electronic Resource
    Electrochemical study of pyrazolone derivatives at the liquid/liquid interface (1994)
    Weinheim : Wiley-Blackwell
    Electroanalysis 6 (1994), S. 1020-1023 
    Details
    ISSN: 1040-0397
    Keywords: Pyrazolone ; Cyclic voltammetry ; Liquid/liquid interface ; Ion transfer ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Pyrazolone derivatives, such as antipyrine, aminopyrine, and 4-aminoantipyrine, can transfer across the water/nitrobenzene interface to produce a pair of well-defined symmetric, reversible anodic-cathodic peaks by cyclic voltammetry. The transfer mechanism has been studied as a result of the formation of complex of related pyrazolone derivatives with a proton. The protonated complex formed then transferred across the water/nitrobenzene interface. The effect of drugs' structure on the transfer behavior was discussed and parameters related to interfacial behavior were determined.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/elan.1140061117
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  • 3
    Electronic Resource
    Electronic Resource
    Anaesthetic lidocaine and dicaine transfer across liquid/liquid interfaces (1992)
    Weinheim : Wiley-Blackwell
    Electroanalysis 4 (1992), S. 905-909 
    Details
    ISSN: 1040-0397
    Keywords: Lidocaine ; Dicaine ; Liquid/Liquid Interface ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Lidocaine transfer across the water/1,2-dichloroethane and the water/nitrobenzene interfaces has been investigated by chronopotentiometry with linear current scanning and cyclic voltammetry. The irreversible hydrolysis occurring in the phase transfer of dicaine at the water/nitrobenzene interface is discussed.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/elan.1140040911
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  • 4
    Electronic Resource
    Electronic Resource
    Alkali and alkaline earth metal ion transfer across the liquid/liquid interface facilitated by ionophore ETH157 (1993)
    Weinheim : Wiley-Blackwell
    Electroanalysis 5 (1993), S. 149-154 
    Details
    ISSN: 1040-0397
    Keywords: Liquid-liquid interface ; Ion transfer ; Ionophore ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The H+, Li+, Na+, K+, Mg2+, Ca2+ and Ba2+ ion transfer across the water/nitrobenzene (NB) and water/1,2-dichloroethane (DCE) interfaces, facilitated by the ionophore ETH157, has been investigated by cyclic voltammetry (CV). The mechanism of the transfer process has been discussed, and the diffusion coefficients and the stability constants of the complexes formed in the nitrobenzene phase have been determined.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/elan.1140050210
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