Spectrophotometric Determination of Manganese in Iron and Steel by Decomposition with Perchloric Acid.
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- AMAKI Toshio
- 久保田鉄工株式会社鋳型ロール研究部
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- TOMINAGA Toshiro
- 久保田鉄工株式会社鋳型ロール研究部
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- KOHARA Hiroshi
- 久保田鉄工株式会社鋳型ロール研究部
Bibliographic Information
- Other Title
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- 過塩素酸分解による鉄鋼中マンガンの吸光光度定量法
- カエンソサン ブンカイ ニ ヨル テッコウ チュウ マンガン ノ キュウコウ コウド テイリョウホウ
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Description
As a spectrophotometric method of manganese in iron and steel the (NH4)2S2O8 method has been mainly adopted.In this method, the sample is decomposed by a mixture of nitric acid, sulphuric acid and, phosphoric acid.<BR>The authors studied the (NH4) 2S2O8 method using perchloric acidic solution which decomposed the sample. It is said that conversion of Mn+2 into Mn+7 by only perchloric acidic solution is commonly unstable.<BR>After studying all kinds of method, authors found this method to be good as far as the amount of perchloric acid in this colored solution is 2 to 10ml.<BR>The features of this method are as follows:<BR>(1) The sample solution is easily converted into Mn+7 from Mn+2 by heating in the boiling bath for only 2 to 3 minutes.<BR>(2) Sufficient addition of color reagent is AgNO3 solution (0.5%) 10ml.and (NH4)2S2O8 solution (15%) 10ml.and a color develops rapidly.<BR>(3) Color of Mn+7 is stable for a day.<BR>(4) The sample containing a large amount of nickel, chromium and cobalt can easily be determined, too.
Journal
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- Tetsu-to-Hagane
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Tetsu-to-Hagane 50 (2), 188-195, 1964
The Iron and Steel Institute of Japan
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Details 詳細情報について
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- CRID
- 1390001205127634432
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- NII Article ID
- 130005615370
- 110001485750
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- NII Book ID
- AN00151251
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- ISSN
- 18832954
- 00211575
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- NDL BIB ID
- 9113209
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed