Journal of the Spectroscopical Society of Japan
Online ISSN : 1884-6785
Print ISSN : 0038-7002
ISSN-L : 0038-7002
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Volume 15, Issue 2
Displaying 1-4 of 4 articles from this issue
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  • An Improved Method for X-ray Fluorescence Analysis of Phosphorus in Iron and Steel
    Isoshi KAWASHIMA
    1966 Volume 15 Issue 2 Pages 43-47
    Published: September 30, 1966
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.15.43
    JOURNAL FREE ACCESS
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    In the previous paper the X-ray fluorescence method with a tungsten target tube for analysing twenty-one elements (Si, P, S, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, As, Zr, Nb, Mo, Ag, Sn, Sb, Ta, W and Pb) in iron and steel was reported.As for phosphorus of less than 0.03% in an ordinary steel was dissatisfied, the method was found inadequate.Therefore a new method with a chromium target tube was tried.By this method, the detectable lowest limit of phosphorus in iron and steel is 0. 0015% and the standard deviation is 0.003%.
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  • Measurements on the Transmissive Luminous Intensity of Figured Glasses
    Yasushi HASEGAWA
    1966 Volume 15 Issue 2 Pages 47-54
    Published: September 30, 1966
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.15.47
    JOURNAL FREE ACCESS
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    Transmissive luminous intensity of commercial figured glass was measured by a goniophotometer and the light diffusion characteristics were discussed with the goniometrical curves obtained.It was found that curves depend on the pattern of figured glass.Numerical representation of curves by a statistical method was attempted, and the degree of diffusion was classified by the numerical values.
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  • Improvement of Volatilization rate in Powdered Samples for Semiquantitative Spectrography
    Shoushiro SAKAI
    1966 Volume 15 Issue 2 Pages 55-63
    Published: September 30, 1966
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.15.55
    JOURNAL FREE ACCESS
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    For the purpose of developing a semi-quantitative universal method of spectrochemical analysis, a study was made on the volatilization rate of elements in powdered samples.
    In this study a mixture of sodium carbonate with graphite powder was used as the common matrix. The results indicate that the selective volatilization in samples is suppressed and the variation in total intensities of several lines studied does not exceed the range with a factor 3-4.By means of the thin-wall electrode, it was found that the volatilization rates of fourteen elements form two groups.
    Working curves for ten elements were made using Ga and Be as internal standard.
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  • Spectrochemical Analysis of Metallic Oxide Powders by Direct Spark Excitation Method
    Shoushiro SAKAI, Hiroko TOGASHI
    1966 Volume 15 Issue 2 Pages 63-71
    Published: September 30, 1966
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.15.63
    JOURNAL FREE ACCESS
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    Direct spark excitation of a powdered sample is investigated for the analysis of metal oxides.In this technique, consumption of the sample is kept stationary by selecting the shape of auxiliary electrode and stable line intensity is obtained by finding an appropriate excitation condition.Influence of chemical combination of elements on working curves is eliminated by fusing the samples with Li2CO3-B2O3 mixture.
    This method makes it possible to determine the concentration of Fe2O3, SiO2, CaO, MgO, Al2O3, CuO and ZnO ranging from one to 80% in oxide samples with an error less than 10% of the own value.
    When applied to the determination of metal elements in a boiler scale, the procedure gave results as good as those of chemical analysis in samples with compositions similar to the standard.
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