Journal of the Spectroscopical Society of Japan
Online ISSN : 1884-6785
Print ISSN : 0038-7002
ISSN-L : 0038-7002
Search
Advanced search
OR
Browse
Search
Volume 18, Issue 5
Displaying 1-4 of 4 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • X-Ray and Electron Spectroscopy for Chemical State Analysis
    Yohichi GOHSHI
    1969 Volume 18 Issue 5 Pages 235-261
    Published: November 30, 1969
    Released on J-STAGE: February 23, 2011
    DOIhttps://doi.org/10.5111/bunkou.18.235
    JOURNAL FREE ACCESS
    Download PDF (4087K)
  • Analytical Application of X-ray Excited Optical Fluorescence Spectra.II.Direct Determination of Rare Earth Elements in Aluminum Oxide
    Kyoichiro TAKASHIMA, Tokunosuke NAKAJIMA, Hiroshi KAWAGUCHI, Yoshihiko ...
    1969 Volume 18 Issue 5 Pages 262-267
    Published: November 30, 1969
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.18.262
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    A direct, quantitative analytical technique for the analysis of gadolinium, dysprosium, europium and samarium in aluminum oxide using the X-ray-excited optical fluorescence spectra is described.
    Rare earth elements were coprecipitated with host aluminum from acid solution as aluminum hydroxide. Precipitated hydroxide was dried after centrifugal separation and then heated in a muffle furnace at 1000°C for 2 hours. These oxides were then heated at 1450°C in an electric resistance furnace for 60 seconds.
    Such an impulsive heating followed by quenching, described above, prominently enhances the luminescent intensities of rare earth elements. It was shown by the X-ray diffraction method that the crystal of Al2O3 were transformed from γr-type oxide to the stable α-type oxide during the above heat treatment.
    Concentrations of gadolinium, dysprosium, samarium, europium have been determined by this method with detection limits ranging from 0.05 to 1.0ppm. Reproducibility was found to be 5-10%.The enhancement and suppression effect due to iron, silicon and copper were investigated and discussed.
    View full abstract
    Download PDF (708K)
  • Determination of Mercury in Brine Purification Mud by Emission Spectrographic Analysis
    Yasuiti MURAO, Yositaka MIYAI
    1969 Volume 18 Issue 5 Pages 268-274
    Published: November 30, 1969
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.18.268
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Emission spectrographic analysis by the AC arc powder method was examined in order to find a simple method for the determination of mercury in brine purification mud.
    The volatilization rate of mercury which depends on the sample composition, could be regulated in a good level by using graphite powder as the diluent.The most suitable carrier which gives the highest sensitivity was found to be Ag2O.
    From the experimental results above mentioned, a recommendable operating condition is as follows;the sample is mixed with a suitable amount of graphite powder and Ag2O, put into a carbon neck electrode, and then excited by an AC arc of 30 volts and 7 amperes for 20 seconds.The use of Hg I 2536.5Å/Ge I 2533.2Å line pair as the analytical lines is satisfactory.The concentration of Hg to which the present method is applicable is 0.05-1.5%.
    This method seems to be suitable for routine analysis in a manufactory.
    View full abstract
    Download PDF (822K)
  • A Multiple Reflection Attachment for Infrared High Sensitivity Reflection Spectroscopy
    Hideaki EBIKO, Nobuchika TABATA, Wataru SUËTAKA
    1969 Volume 18 Issue 5 Pages 275-278
    Published: November 30, 1969
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.18.275
    JOURNAL FREE ACCESS
    Download PDF (495K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top