Journal of the Spectroscopical Society of Japan
Online ISSN : 1884-6785
Print ISSN : 0038-7002
ISSN-L : 0038-7002
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Volume 9, Issue 4
Displaying 1-3 of 3 articles from this issue
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  • Clinical Applications of Infrared Spectroscopy
    Goro CHIHARA
    1961 Volume 9 Issue 4 Pages 181-196
    Published: 1961
    Released on J-STAGE: February 23, 2011
    DOIhttps://doi.org/10.5111/bunkou.9.181
    JOURNAL FREE ACCESS
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  • Quantitative Type Analysis of Olefinic Hydrocarbons by Infrared Spectrophotometry
    Comparison between Single and Double Beam Methods by Infrared Double Beam Spectrophotometer
    Kazuyoshi ISHIDA
    1961 Volume 9 Issue 4 Pages 197-201
    Published: 1961
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.9.197
    JOURNAL FREE ACCESS
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    An infrared absorption method is presented for the determination of the type of olefinic hydrocarbons. The accuracy of determination of each type is about 2.0% in error.Comparison between single and double beam methods for the determination by an infrared double beam spectrophotometer is described.
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  • Quantometric Analysis of Silicon in White Cast Iron
    Tomomi OKA, Hiroshi NEMOTO, Sakae KURATA
    1961 Volume 9 Issue 4 Pages 201-208
    Published: 1961
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.9.201
    JOURNAL FREE ACCESS
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    In a quantometric simultaneous determination of alloyed white cast iron, analytical accuracy of silicon can not easily be made comparable with that of other elements (Mn, Ni, Cr, Mo, V and Mg).Especially, when the silicon content is below 0.7%, some large error is apt to be on the result.To better the accuracy of silicon analysis, excitation condition and effect of metallurgical history of test materials are mainly investigated with the following results.
    (1) Reproducibility of result is best by high voltage spark method (power supply: 140V;R: residual;C: 0.007 μF×4;L: 0 μH;counter electrode: tungsten;prespark time: 50 sec.;integration time: 20 sec.).
    (2) If residual austenite in micro-structure is decomposed prior to the analysis by heat treatment (550° for 1-3 hrs) of both the standard and the Ctest materials, better accuracy will be obtained.
    (3) The line pair Fe 2714 Å/Si 2516 Å gives the best result.
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