Journal of the Spectroscopical Society of Japan
Online ISSN : 1884-6785
Print ISSN : 0038-7002
ISSN-L : 0038-7002
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Volume 26, Issue 2
Displaying 1-5 of 5 articles from this issue
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  • Effects of Potassium Chloride on the Analytical Characteristics of the Capillary Arc Excitation Source
    Masaaki KUBOTA, Ryohei ISHIDA, Yoshimasa FUJISHIRO
    1977 Volume 26 Issue 2 Pages 63-69
    Published: April 30, 1977
    Released on J-STAGE: February 23, 2011
    DOIhttps://doi.org/10.5111/bunkou.26.63
    JOURNAL FREE ACCESS
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    In emission spectrometry using a capillary arc as an excitation source, the effects of potassium chloride in solutions on the spectrum and background intensities, analytical curves, precision, and sensitivity have been investigated. Sample solutions were sprayed with a pneumatic glass nebulizer, passed through a modified desolvation device, and the desolvated aerosols were introduced into the arc plasma to be excited. The capillary arc operated satisfactorily at a low argon flow rate of 1.15l/min. The spectrum intensity of iron increased and the background emission decreased with increasing potassium chloride concentration. When spraying solutions with more than 0.5 M potassium chloride, potassium chloride deposited on the inside of the capillary, reducing the emission stability. The use of 0.1 M potassium chloride solutions resulted in the improvement in detection limits for all the elements tested but tungsten and zirconium without marked decrease in the slope of analytical curves and reduction in the precision of measurements.
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  • Calculations of the Partial Pressure of OH Molecules in Argon-Plasma Emission Sources for Spectrochemical Analysis
    Yoshimasa FUJISHIRO, Masaaki KUBOTA, Ryohei ISHIDA, Seiichi MURAYAMA
    1977 Volume 26 Issue 2 Pages 70-75
    Published: April 30, 1977
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.26.70
    JOURNAL FREE ACCESS
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    Calculations have been made for the partial pressure of OH molecules in argon plasmas into which a small amount of water vapor was introduced through a desolvation device. The Newton-Raphson method was applied to the calculation for a system consisting of O, H, OH, O2, H2, H2O, and argon. In the temperature range above 4000 K, where the system consisted mainly of O, H, OH, and argon, an approximate analytical calculation provided results in a good agreement with those obtained by the Newton-Raphson method. The partial pressures in the plasma jet light source and the high frequency plasma torch were determined by the methods proposed. Calculated ratios of the OH band emission intensities at two different temperatures are also given and are discussed.
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  • [title in Japanese]
    [in Japanese]
    1977 Volume 26 Issue 2 Pages 77-78
    Published: April 30, 1977
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.26.77
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese]
    1977 Volume 26 Issue 2 Pages 79-80
    Published: April 30, 1977
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.26.79
    JOURNAL FREE ACCESS
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  • Fundamental Techniques for Spectroscopy
    (2) Low-Temperature Techniques
    Makoto MORITA
    1977 Volume 26 Issue 2 Pages 81-96
    Published: April 30, 1977
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.26.81
    JOURNAL FREE ACCESS
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