Journal of the Spectroscopical Society of Japan
Online ISSN : 1884-6785
Print ISSN : 0038-7002
ISSN-L : 0038-7002
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Volume 2, Issue 8
Displaying 1-4 of 4 articles from this issue
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  • [title in Japanese]
    [in Japanese]
    1954 Volume 2 Issue 8 Pages 3-8
    Published: December 20, 1954
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.2.8_3
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1954 Volume 2 Issue 8 Pages 9-13
    Published: December 20, 1954
    Released on J-STAGE: July 01, 2011
    DOIhttps://doi.org/10.5111/bunkou.2.8_9
    JOURNAL FREE ACCESS
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  • A Simple Controlled Spark Apparatus
    Tokunosuke NAKAJIMA, Shogo SHIBUYA
    1954 Volume 2 Issue 8 Pages 14-21
    Published: December 20, 1954
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.2.8_14
    JOURNAL FREE ACCESS
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    A simple controlled spark apparatus, based on the Maresca-Simons-Raiskij scheme, was constructed. In spite of its simplicity, experiments have given very high accuracy of analytical results. Several factors which may influence the reproducibility of the analytical results were investigated using Industrial Research Quantometer (A. R. L.) and ordinary photographic procedure. As a results, reproducibility of 2.4% expressed as standard deviations was obtained for the analysis of Ni in nickel-steel, wheseas 3.5% had obtained using high voltage spark supplied from High Precision Source Unit. This improvement in accuracy however, may mainly due to the difference of vaporization processes, although the stability of this apparatus had been clearly indicated by the stability of so-called arc to spark line ratio particularly.
    Low cost and easy maintenace are also the excellent features of this apparatus.
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  • Quantitative Spectrographic Analysis of Niobium and Tantalum in 18-8 Stainless Steel
    Masao YANA, Heiichi MOCHIZUKI, Kazuo SAITO, Susumu KISHIMOTO
    1954 Volume 2 Issue 8 Pages 22-27
    Published: December 20, 1954
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.2.8_22
    JOURNAL FREE ACCESS
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    A quantitative spectrographic analysis of niobium and tantalum in 18-8 stainless steel was researched by the solution method and the salts powder method.
    The amount of niobium in the sarnple for experiments was about 1 percent, and tantalum 0.1 percent.
    The spectral analysis of niobium was made by the solution method, and tantalum by the solution method and the salts powder method.
    Concerning the exitation process, condensed spark was taken in the solution method and direct current arc was taken in the salts powder method. In both cases, carbon electrode was used for supporting electrode commonly.
    The saturate solution of ammonium-oxalate was used to inhibit the hydrolysis of niobium and tantalum in the solution method.
    According to the results, the quantitative precision of niobium was about 3 percent, and as for tantalum, responsibility was low in the solution method and reproducibility essentially in the salts powder method, but practical enough.
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