巻号一覧
21 巻 (1972)
- 6 号 p. 389-
- 5 号 p. 295-
- 4 号 p. 221-
- 3 号 p. 141-
- 2 号 p. 67-
- 1 号 p. 1-
21 巻, 5 号
選択された号の論文の4件中1～4を表示しています
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小林 喬郎, 稲場 文男1972 年 21 巻 5 号 p. 295-315
発行日: 1972/10/31
公開日: 2010/06/28
ジャーナル フリーPDF形式でダウンロード (3081K) -
白浜 和夫, 渡辺 誠治, 真木 武1972 年 21 巻 5 号 p. 316-321
発行日: 1972/10/31
公開日: 2010/06/28
ジャーナル フリーIn the determination of mercury by atomic absorption Spectrometory, the high sensitivity is obtained by the addition of reducing agents.But the decrease of absorbance is observed on standing.To eliminate this standing effects, Y-type reaction tube was used.The process is that mercury solution and reducing agent solution are aspirated separately and the two solutions are mixed in a Y-type reaction tube.Furthermore, the effect of reducing agents, acids, pH and diverse ions were investigated.Among reducing agents, tin (II) chloride was found to be the best agent and absorbance could be raised to about fifteen-folds.Detection limit of this method was 0.02ppm of mercury and the coefficient of variation was 1.1% at 10ppm Hg level. When the ammonium nitrate was contained, the absorbance of mercury was constant at a pH of 1-10.
One ppm of I- and 200ppm of SCN- affected, but interference of other ions is negligible. The analytical results of mercury in numerical indicator tube by this method was satisfactorily in agreement with dithizone method.抄録全体を表示PDF形式でダウンロード (654K) -
山根 典子1972 年 21 巻 5 号 p. 322-327
発行日: 1972/10/31
公開日: 2010/06/28
ジャーナル フリーIn laser microspectral analysis using cross-excitation by an auxiliary spark discharge, a stain produced around a crater was presumed to be due to deposit of carbon from the electrodes and oxidation of the sample surface heated by the spark plasma.The form and degree of the stain vary with the spark discharge condition.That is, the forms were coincident with those of spark plasma observed under various conditions, and in case a flat spark plasma was used, both amounts of carbon and oxygen were less than those produced when a spherical spark plasma was employed.
In order to prevent the sample surface from being stained, it was desirable to select the discharge condition so as to produce the flat spark plasma and moreover to increase the distance between the sample and the electrode points.In case it was desired to analyse the thin surface layer only, a good result was obtained by displacing the focus of the laser beam upward by several hundreds microns from the sample surface and by selecting the spark discharge condition to produce the flat spark plasma.抄録全体を表示PDF形式でダウンロード (1763K) -
第5講赤外吸収とラマン散乱田隅 三生, 宮沢 辰雄1972 年 21 巻 5 号 p. 328-336
発行日: 1972/10/31
公開日: 2010/06/28
ジャーナル フリーPDF形式でダウンロード (1118K)
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