Determination of Tungsten in Iron and Steel. I : Investigations on the Perchloric Acid Method
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概要
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The conditions for the determination of tungsten in iron and steel have been studied by the use of perchloric acid. Tungsten can be precipitated quantitatively with a single fuming of perchloric acid by the following treatment : the sample is dissolved in aqua regia and evaporated to the white fume after an addition of 50 ml of perchloric acid ; after cooling, 30 ml of 6N hydrochloric acid is added and its final volume is brought to 150 ml with water so as to adjust the concentration of hydrochloric acid between 1〜1.5N. The solution is warmed at 70°〜80℃ for an hour and then filtered. Applying this method also to the rapid determination, tungsten can be determined within about 20 minutes.
- 東北大学の論文
著者
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Goto Hidehiro
The Research Institute For Iron Steel And Other Metal S
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Kakita Yachiyo
The Research Institute For Iron Steel And Other Metals
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Goto Hidehiro
The Research Institute For Iron Steel And Other Metal
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