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大気中<14>^CO測定手法の検討(II)
https://doi.org/10.18999/sumrua.11.164
https://doi.org/10.18999/sumrua.11.1647d69af0b-5d77-48a9-9321-0cf063c94c03
名前 / ファイル | ライセンス | アクション |
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KJ00000187350.pdf (335.1 kB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2010-05-27 | |||||
タイトル | ||||||
タイトル | 大気中<14>^CO測定手法の検討(II) | |||||
言語 | ja | |||||
その他のタイトル | ||||||
その他のタイトル | The examination of atmospheric <14>^CO measurement techniques (II) | |||||
言語 | en | |||||
著者 |
後藤, 晃彦
× 後藤, 晃彦× Goto, Akihiko× 森泉, 純× Moriizumi, Jun× 飯田, 孝夫× Iida, Takao |
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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 | |||||
権利 | ||||||
言語 | ja | |||||
権利情報 | 名古屋大学年代測定資料研究センター 天然放射性元素測定小委員会 | |||||
権利 | ||||||
言語 | ja | |||||
権利情報 | 本文データは学協会の許諾に基づきCiNiiから複製したものである | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Atmospheric ^<14>CO can be used as a tracer of the global tropospheric hydroxyl radical (OH・) concentration. Hydroxyl radical is significantly responsible for the destruction of many sort of trace gas ; methane, carbon monoxide and so on. For collecting atmospheric carbon monoxide, a preparation line was remodeled from a methane preparation line. This line enriches carbon monoxide in about 1m^3 air by adsorption under low temperature. The enriched carbon monoxide is purified of other gas components with gas chromatography. The purified carbon monoxide is finally turned to carbon dioxide through the combustion tube in the preparation line. However, 1m^3 air include only about 0.1-1ml of carbon monoxide, it is not enough to ^<14>CO measurement by AMS (AMS need 1mg carbon or 2ml carbon dioxide). Thus, the carbon dioxide derived from the carbon monoxide in the air sample is diluted with the other carbon dioxide whose isotopic ratio is known. In this experiment, more than 3ml carbon monoxide separated from urban air was devided to three, and two of those were diluted with carbon dioxide whose isotopic ratio was known. Then, their ^<14>CO isotopic ratios were measured. The ratios of ^<14>C/^<13>C of atmospheric caron monoxide calculated with those of the diluted samples and their dilution rate were accordant to directly measured ^<14>C/^<13>C ratio of the not-diluted sample. However, errors of the calculated ratios became larger due to dilution. Hereafter, this preparation will be appraised and reconditioned to effectuate measurement of ^<14>C/^<13>C ratio in atmospheric carbon monoxide with the dilution method. | |||||
言語 | en | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | タンデトロン加速器質量分析計業績報告 Summaries of Researches Using AMS 1999 (平成11)年度 | |||||
言語 | ja | |||||
出版者 | ||||||
出版者 | 名古屋大学年代測定資料研究センター 天然放射性元素測定小委員会 | |||||
言語 | ja | |||||
言語 | ||||||
言語 | jpn | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | 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.11.164 | |||||
ID登録タイプ | JaLC | |||||
関連情報 | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | URI | |||||
関連識別子 | http://ci.nii.ac.jp/naid/110000475642/ | |||||
書誌情報 |
ja : 名古屋大学加速器質量分析計業績報告書 巻 11, p. 164-169, 発行日 2000-03 |
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値 | application/pdf | |||||
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値 | publisher |