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封管法で微量のシュウ酸をガス化した場合のガス組成
https://doi.org/10.18999/sumrua.20.152
https://doi.org/10.18999/sumrua.20.1525e18ac26-cf12-4bbb-8caf-088aa3e44394
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
goto2008.pdf (7.5 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2011-05-02 | |||||
| タイトル | ||||||
| タイトル | 封管法で微量のシュウ酸をガス化した場合のガス組成 | |||||
| 言語 | ja | |||||
| その他のタイトル | ||||||
| その他のタイトル | Gas composition of a small amount of oxalic acid combusted in closed -tube system | |||||
| 言語 | en | |||||
| 著者 |
後藤(桜井）, 昌子
× 後藤(桜井）, 昌子× 南, 雅代× 三村, 耕一× Goto, Akiko S.× Minami, Masayo× Mimura, Kouichi |
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| アクセス権 | ||||||
| アクセス権 | open access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The closed tube-combustion method is still a popular sample purification system for ^<14>C and δ^<13>C analysis though the NC elemental analyzer system is used for efficient analysis of them. Minami et al. (submitted) suggested that the carbon yield of oxalic acid tends to decrease in the closed tube-combustion method with falling amount of sample, and that the low carbon yield affects the ^<14>C content and δ^<13>C values. In this study, we analyzed gas compositions of a small amount of oxalic acid combusted in the closed-tube by gas chromatography to clarify the factor of decreasing carbon yield. 1mg, 2mg and 5mg of oxalic acids were combusted with 50mg CuO at 450℃, and the extracted gases were analyzed by Gas Chromatograph (Shimadzu GC/TCD-2014) at Nagoya University. Three kinds of gasses H2, CO, and C02 were detected from 1mg oxalic acid combustion, though H2 and CO volumes were very smaller than C02. The total volume of detected gases is about 60%, and its low yield indicates an existence of the other gas with about dozens percent. On the other hand, the sample gases of 2mg and 5mg oxalic acids show high gas yields, composing of mainly C02, except for negligible amount of CO in 2mg sample. The gas of 10mg oxalic acid, combusted without CuO, contains considerable percentage of H2 and CO together with C02, compared with the samples combusted with CuO. The gases of H2 and CO, which are extracted due to imperfect combustion of oxalic acid, could block C02 formation from oxalic acid. This study indicates that the amount of extracted C02 is probably controlled by a quantity of formic acid and water extracted together, which might be occur in a closed -tube under strange condition of very low pressure. | |||||
| 言語 | en | |||||
| 出版者 | ||||||
| 出版者 | 名古屋大学年代測定資料研究センター | |||||
| 言語 | ja | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | departmental bulletin paper | |||||
| 出版タイプ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| ID登録 | ||||||
| ID登録 | 10.18999/sumrua.20.152 | |||||
| ID登録タイプ | JaLC | |||||
| 書誌情報 |
ja : 名古屋大学加速器質量分析計業績報告書 巻 20, p. 152-155, 発行日 2009-03 |
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| 著者版フラグ | ||||||
| 値 | publisher | |||||
