巻号一覧
4 巻, 1 号
選択された号の論文の5件中1～5を表示しています
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吉永 弘1956 年 4 巻 1 号 p. 3-6
発行日: 1956/01/30
公開日: 2010/06/28
ジャーナル フリーPDF形式でダウンロード (631K) -
I: 実験条件の影響飯島 弘1956 年 4 巻 1 号 p. 7-22
発行日: 1956/01/30
公開日: 2011/02/23
ジャーナル フリーIn quantitative spectrographic analysis, the selection of line-pairs is very important However, fundamental and systematic investigations on the subjects of this problem have not yet been made exhaustively. The author has carried out the fundamental investigations on this problem concerning the quantitative spectrogaphic analysis of steel, and clarified the physical properties of many spectral lines, which have been used up to this time. Several important fundamental items in seleting line-pairs and several important physical phenomena in Feussner spark were obtained. The results are summarized as follows:
(1) Physical properties of many spectral lines have been clarified and many line-pairs have been classified according to their physical properties.
(2) Under the different experimental conditions, the relative intensities of line-pairs change with their physical properties.
(3) As for the line-pairs of group I (each spectral line is ion-line), the following simple experimental equation has been derived.
log IrA/IrB = aΔE + b
IrA = relative intensity.(condition A)
IrB = relative intensity. (condition B)
Delta;E=difference of excitation potential.
a, b = experimental constant.
This equation is applicable in practice.
(4) In general, the line-pair is to be considered as the desirable one, if Delta;E is small.
(5) It seems to be reasonable that the thermal equilibrium is not maintained in the Feussner-spark.
(6) Even in the Feussner-spark, the self-absorption of spectral lines, especially that of resonance lines as well as its influence on the quantitative spectrographic analysis are recognized.
(7) The most important conditions to be considered in selecting line-pairs in Feussner-spark excitation are as follows:
a) the line-pair is the one which belongs to group I and whose Delta;E is small.
b) Each spectral line is not resonance line.
c) Difference of the intensities between two spectral lines is small.抄録全体を表示PDF形式でダウンロード (2151K) -
安田 和夫1956 年 4 巻 1 号 p. 23-29
発行日: 1956/01/30
公開日: 2010/06/28
ジャーナル フリーThe C. R. L. Universal source unit has been used conveniently for general spectrochemical analysis. However, the discharges with this source unit are inadequate, as the case may be, owing to over-heat of the electrodes. For the purpose of avoiding this difficulty, the intermittent discharge method with C. R. L. Universal source unit was devised. “n” ceasing cycles were introduced between individual discharges by electronic relaxation pulsater appendant to the trigger circuit.
This paper presents the details of the intermittent devices and an application to the determination of minute content of silicon in the thin steel sheet. An applicability of the new intermittent trigger devices to an alternative current arc is also described.抄録全体を表示PDF形式でダウンロード (1115K) -
岡田 富男, 上田 忠雄, 上妻 常英1956 年 4 巻 1 号 p. 30-33
発行日: 1956/01/30
公開日: 2010/06/28
ジャーナル フリーA very rapid method determining lead in gasoline without preliminary treatment is provided by the flame photometer.
However, it usually depends upon the availability of an unleaded sample of the gasoline bare stock. A method is described whereby it should become possible, with the single beam apparatus attached a stopper, to use lithium naphthenate as an internal standard in comparing different stocks, without recourse to unlead blanks or more than one standard.
It takes 5 minutes to determine lead in gasoline, and accuracy is 0.02ml. per gallon.抄録全体を表示PDF形式でダウンロード (473K) -
奥田 寿, 富永 幸之1956 年 4 巻 1 号 p. 39
発行日: 1956/01/30
公開日: 2010/06/28
ジャーナル フリーPDF形式でダウンロード (153K)
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