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- KONDO Asaji
- Laboratory of Organic Chemistry, Tokyo Institute of Technology
Bibliographic Information
- Other Title
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- ミクロボンベによる有機元素分析(III)
- ミクロボンベ ニ ヨル ユウキ ゲンソ ブンセキ 3
- Gravimetric microdetermination of organic selenium
- 有機セレン微量重量定量
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Abstract
A simple microdetermination of organic selenium has been investigated. The sample in a microbomb is decomposed by the sodium peroxide method in a short time; the product of decomposition is taken up in water ; the hydrogen peroxide present in the solution is decomposed by gentle boiling with a platinum foil; and the solution is neutralized with conc HCl. The solid suspension is filtered off, and the solution is adjusted to contain 34 N HCl. Aqueous hydrazine solution is added to reduce the selenous acid produced by the decomposition, precipitating it as a red selenium. This is converted to a black selenium by heating it for more than 30 min, and letting it stand overnight. The selenium is filtered off through a no. 4 glass filter, pried and weighed. Even the presence of N, S, halogens (including iodine) does not interfere with the determination of selenium by this method. The errors of analyses were ± 0.5 % of theory.
Journal
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- BUNSEKI KAGAKU
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BUNSEKI KAGAKU 6 (9), 583-585, 1957
The Japan Society for Analytical Chemistry
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Keywords
Details 詳細情報について
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- CRID
- 1390282679636957952
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- NII Article ID
- 130000954701
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- NII Book ID
- AN00222633
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- NDL BIB ID
- 10104770
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- ISSN
- 05251931
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed