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 24, Issue 2
Displaying 1-7 of 7 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • Application of Microwave Spectroscopy to Chemistry
    Shuji SAITO
    1975 Volume 24 Issue 2 Pages 61-78
    Published: April 30, 1975
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.24.61
    JOURNAL FREE ACCESS
    Download PDF (2232K)
  • Effect of Pores in Sample Electrode Prepared by Powder Metallurgy in Emission Spectrochemical Analysis. I.
    Katsuyoshi NAGANUMA, Makoto KATO
    1975 Volume 24 Issue 2 Pages 79-88
    Published: April 30, 1975
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.24.79
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    In the emission spectrochemical analysis, the influence of pores in sample electrodes, such as porous sintering products, powder-pressed samples, dipped electrodes etc., on the intensity and the intensity ratio of spectral-lines has been studied with samples prepared by powder metallurgy. The results obtained are as follows: (1) The intensities, intensity ratios and erosion amounts depend on the distribution, shape and amount of pores, and segregation of elements; (2) Types of the effects of the pore on the intensity differ with the amount of pore ; (3) Little influence of the pore on the intensity is observed in a range of a little amount of pore ; and (4) linear working curves are obtained with sample prepared under the fixed conditions of the forming pressure, sintering temperature, sintering time and so on.
    View full abstract
    Download PDF (3190K)
  • Studies on the Spectrochemical Analysis of Metal Samples. by means of the Laser Microprobe IV.
    Effects of Atmospheres on Spectral Line Intensity
    Masaaki KUBOTA, Ryohei ISHIDA
    1975 Volume 24 Issue 2 Pages 89-98
    Published: April 30, 1975
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.24.89
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    To study effects of atmosphere on spectral emission of laser-induced plasmas, spectral line intensities of elements in metal samples were investigated in air, oxygen, nitrogen, argon, and helium-oxygen atmospheres using a normal laser microprobe with auxiliary spark excita tion. Except for silicon lines, the strongest intensities were observed in the case of argon atmosphere. For the practical use, however, it was required to mix a small amount of oxygen in argon for keeping high spark voltages, because use of pure argon caused a decrease in the minimum spark voltage between auxiliary electrodes. A mixture of argon (2l/min.) and oxygen (100 cc/min.) can be used to improve the analytical sensitivity of particular elements such as magnesium and zinc in aluminum alloys. Little difference was observed between the erosion amounts in air and in argon-oxygen atmospheres. On the basis of excitation temperatures measured in the both atmospheres, enchancement effect of intensities are discussed.
    View full abstract
    Download PDF (1254K)
  • Emission Spectrographic Analysis of Solutions by DC-Arc Excitation with an Ultrasonic Nebulizer
    Hiroshi KAWAGUCHI, Tatsuo SAGA, Atsushi MIZUIKE
    1975 Volume 24 Issue 2 Pages 99-103
    Published: April 30, 1975
    Released on J-STAGE: February 23, 2011
    DOIhttps://doi.org/10.5111/bunkou.24.99
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    An ultrasonically nebulized and desolvated aerosol is introduced into a horizontal, 5-A dcarc by argon carrier gas. A simple quartz chamber is employed to control the atmosphere of the arc. In the presence of more than 1 mg/ml of sodium or potassium in the solution, the bright core of the arc disappears and a flame-like, low-luminous arc column (low-temperature arc) is obtained. An addition of 1 mg/ml of sodium to the sample increases the sensitivity for many elements and suppresses the effect of other matrix elements. This low-temperature arc is suitable for the detection of the elements whose excitation energies are below 5 eV, whereas in the absence of alkali elements, most elements are excited. The detection limits measured for 10 elements in the presence of sodium are comparable with, or lower than, those obtained with the most sensitive flame photometric method.
    View full abstract
    Download PDF (650K)
  • [title in Japanese]
    [in Japanese]
    1975 Volume 24 Issue 2 Pages 105-106
    Published: April 30, 1975
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.24.105
    JOURNAL FREE ACCESS
    Download PDF (4666K)
  • [title in Japanese]
    [in Japanese]
    1975 Volume 24 Issue 2 Pages 107-108
    Published: April 30, 1975
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.24.107
    JOURNAL FREE ACCESS
    Download PDF (5373K)
  • Mathematical Basis for Data Processing in Spectroscopy
    (2) Data Fitting-Its Ideal and Reality (I)
    Toru NAKAGAWA, Kozo KUCHITSU
    1975 Volume 24 Issue 2 Pages 109-126
    Published: April 30, 1975
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.5111/bunkou.24.109
    JOURNAL FREE ACCESS
    Download PDF (2433K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top