Review of Polarography
Online ISSN : 1884-7692
Print ISSN : 0034-6691
ISSN-L : 0034-6691
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Volume 16, Issue 6
Displaying 1-3 of 3 articles from this issue
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  • Polarographic Behavior of Osmium (VIII) in Several Supporting Electrolytes
    Sudarshan LAL, Gary D. CHRISTIAN
    1970 Volume 16 Issue 6 Pages 109-115
    Published: 1970
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5189/revpolarography.16.109
    JOURNAL FREE ACCESS
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    The Polarographic behavior of osmium tetroxide in several electrolytes and buffers has been studied. Osmium(VIII) yields three waves in some media, the second step being less irreversible than the third. The irreversible character is supported by current-time curves and single sweep cyclic voltammograms. Rate constants are reported.
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  • High-Frequency Polarography of Cyanide Ion
    Tomihlto KAMBARA, Shlgeyukl TANAKA
    1970 Volume 16 Issue 6 Pages 116-119
    Published: 1970
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5189/revpolarography.16.116
    JOURNAL FREE ACCESS
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    ? The HF polarographic characteristics of cyanide ion are studied experimentally. As the supporting electrolyte is recommended 0.1N NaOH. For the analytical application one should pay attention to the interfering effect of chloride ion.
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  • Study on the Catalytic Hydrogen Wave by Suspended Semiconductor Material (l)
    Mutsuaki SHINAGAWA, Nobuyuki YANO, Hiroyuki NEZU
    1970 Volume 16 Issue 6 Pages 120-132
    Published: 1970
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5189/revpolarography.16.120
    JOURNAL FREE ACCESS
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    The semiconductor material powder of group IV, V or VI elements, or compound semiconductor like as Sb2S3, PbS etc., is added in 1F ammonium chloride solution. Under stirring the solution, polarographic current-potential curve shows a catalytic hydrogen wave which is characteristic according to the species of the semiconductor used. The decomposition potential of catalytic hydrogen wave due to semiconductor which has much smaller work function than that of mercury does not appear at the more positive potentials than the case of the absence of semiconductor powder. In other words, such semiconductor gives no catalytic hydrogen wave. The greater the work function of semiconductor used is, the more positive potentials the decomposition potential of a catalytic hydrogen wave is. The height of catalytic hydrogen wave is higher with smaller work function of semiconductor used. The present paper also reports the trial of electronic explanation of the catalytic nature based on the energy band model of semiconductor and a model on the surface of mercury electrode as well as on the surface of the semiconductor in aqueous ammonium chloride solution.
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