Studies on the Flame Spectrochemical Analysis. VI : Determination of Strontium
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Strontium radiated its spectral line at 460.7mμ and revealed the band head of band spectrum of its oxide at 681mμ, and the spectral line at 460.7mμ had very high sensitivity. Hydrochloric acid had no effect on the emission, but nitric acid and sulfuric acid decreased its intensity, and phosphoric acid decreased its intensity remarkably until the molar ratio of phosphorus to strontium became about 2 : 3. Alkali metal increased the intensity of strontium emission and the presence of magnesium or appreciably large amounts of calcium caused the depression of its emission, while a large amounts of barium enlarged the emission intensity. Aluminium, chromium, manganese and copper caused the decrease of the spectrum intensity. From these result, strontium in shell and lime stone was determined rapidly with good reproducibility.
- 東北大学の論文
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