WEKO3
アイテム
名古屋大学東山キャンパス内の松葉の<14>^C濃度測定
https://doi.org/10.18999/sumrua.2.104
https://doi.org/10.18999/sumrua.2.104160acc51-3488-467f-a059-217aafbbefd6
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
KJ00000187507.pdf (414.1 kB)
|
|
| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2010-04-26 | |||||
| タイトル | ||||||
| タイトル | 名古屋大学東山キャンパス内の松葉の<14>^C濃度測定 | |||||
| 言語 | ja | |||||
| その他のタイトル | ||||||
| その他のタイトル | <14>^C concentrations by accelerator mass spectrometry of pine needles collected at Higashiyama campus of Nagoya University | |||||
| 言語 | en | |||||
| 著者 |
中村, 俊夫
× 中村, 俊夫× Nakamura, Toshio× 中井, 信之× Nakai, Nobuyuki× 古川, 路明× Furukawa, Michiaki |
|||||
| 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 | A Tandetron accelerator mass spectrometer, constructed by the General Ionex Corporation, Mass., USA, has been installed at Nagoya University in 1982,to measure ^<14>C. The spectrometer has been used to measure ^<14>C concentrations of natural samples, as well as ^<14>C ages of geological and archeological samples. The Tandetron spectrometer measures ^<14>C/^<13>C ratios of carbon prepared from carbonaceous samples. The ratio of a young samples (^<14>C ages younger than several thousand years old) is routinely measured with a precision of ±1%, using a C-Ag mixture target containing only 2-5 mg of carbon, in a measurement lasting about 4 hours. Errors for older samples become larger, because of the smaller number of ^<14>C counts. The ^<14>C background level of the spectrometer, estimated by using old natural graphite, it about 3x10^<-16> in ^<14>C/^<12>C ratio. The Tandetron spectrometer has been applied to measure ^<14>C concentrations, Δ^<14>C, of annual rings (1945-1983) from a Kiso hinoki tree (Japanese Cypress), to investigate the annual Δ^<14>C variation of the atmospheric CO_2 ; the cause of variation could be addition of ^<14>C produced by nuclear weapon tests in late 1950's to early 1960's. The ^<14>C concentrations in pine needles, collected at the Higashiyama Campus of Nagoya University, have also been measured since 1983. The results in our ^<14>C measurement of pine needles are described in the present study, focusing on the annual changes in Δ<14>C values of the atmoshperic CO_2,and on the effect upon ^<14>C concentrations for pine needles of a local ^<14>CO_2 emission from incineration of radioactive organic solvent wastes containing ^<14>C, which have been produced by biochemical experiments with ^<14>C tracer, at the Radioisotope Center in the Higashiyama Campus of Nagoya University. | |||||
| 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 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.2.104 | |||||
| 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/110000475776/ | |||||
| 書誌情報 |
ja : 名古屋大学加速器質量分析計業績報告書 巻 2, p. 104-112, 発行日 1991-03 |
|||||
| フォーマット | ||||||
| 値 | application/pdf | |||||
| 著者版フラグ | ||||||
| 値 | publisher | |||||
