Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
1996-09-01 |
タイトル |
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タイトル |
CHEMICAL REACTIONS IN POLYCRYSTALLINE ICE |
言語 |
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言語 |
eng |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
departmental bulletin paper |
ID登録 |
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ID登録 |
10.15094/00003938 |
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ID登録タイプ |
JaLC |
ページ属性 |
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内容記述タイプ |
Other |
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内容記述 |
P(論文) |
記事種別(英) |
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en |
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ABSTRACT |
論文名よみ |
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その他のタイトル |
CHEMICAL REACTIONS IN POLYCRYSTALLINE ICE |
著者名よみ |
タケナカ, ノリミチ
ダイモン, トオル
バンドウ, ヒロシ
マエダ, ヤスアキ
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著者名(英) |
TAKENAKA, Norimichi
DAIMON, Tohru
BANDOW, Hiroshi
MAEDA, Yasuaki
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著者所属(英) |
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en |
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College of Engineering, Osaka Prefecture University |
著者所属(英) |
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en |
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College of Engineering, Osaka Prefecture University |
著者所属(英) |
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en |
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College of Engineering, Osaka Prefecture University |
著者所属(英) |
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en |
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College of Engineering, Osaka Prefecture University |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
The acceleration mechanism of chemical reactions by freezing has been investigated in the reaction of nitrite with dissolved oxygen to form nitrate. The reactants are concentrated into the unfrozen solution between ice crystals. In such a solution the reactants are further concentrated, and the pH of the solution decreases due to proton transfer from the ice to the solution to relax the freezing-potential that is generated. As a result, the reaction of nitrite with dissolved oxygen is accelerated considerably in freezing. To confirm this mechanism the reaction was investigated at various temperatures. At lower temperature than -3℃, nitrate formed rapidly until the sample was completely frozen, while the reaction did not proceed after the sample was completely frozen. On the other hand, at higher temperature than -3℃ nitrate formation was still observed even after the sample was completely frozen. The reactants were not very concentrated because the unfrozen solution was equilibrated at that temperature at low concentration of the reactants due to freezing point depression. The concentration factor of the reactants at the temperature of -3℃ was estimated to be several thousand. |
雑誌書誌ID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA10756213 |
書誌情報 |
Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology
巻 10,
p. 153,
発行日 1996-09
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出版者 |
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出版者 |
National Institute of Polar Research |