| Item type |
紀要論文 / Departmental Bulletin Paper(1) |
| 公開日 |
2022-01-21 |
| タイトル |
|
|
タイトル |
A new inlet system for microscale carbon and oxygen stable isotope analysis using dual inlet isotope ratio mass spectrometer at Niigata University, Japan |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
carbon and oxygen isotopes |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
MAT-253 inlet system |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
NIST standard measurements |
| 資源タイプ |
|
|
資源 |
http://purl.org/coar/resource_type/c_6501 |
|
タイプ |
departmental bulletin paper |
| 著者 |
Satish-Kumar, Madhusoodhan
Kiran, Sasidharan
Abe, Miyako
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
A new Thermo Scientific^<TM> MAT-253 isotope ratio mass spectrometer was installed at Department of Geology, Niigata University, Japan under the MEXT Grant-in-Aid for Scientific Research on Innovative Areas. The mass spectrometer was set up for carbon and oxygen isotope measurement of small volume CO_2 samples. A new inlet vacuum line was constructed for transferring standard gas, to inlet externally prepared CO_2 gas samples and transfer CO_2 gas prepared in the online carbonate reaction system. The line is evacuated using a turbo molecular pump and pneumatically activated valves controlled by an electrical control board. The vacuum line also includes a reference CO_2 gas (Working Standard) reservoir and a laboratory standard CO_2 gas (Machine Standard) reservoir for routine analyses, as well as SF_6 reference gas reservoirs. The preparation line can hold high vacuum conditions without appreciable leaks for several hours, required for the completion of a single session of sample measurements. Long-term laboratory standard measurement results are reported here, which shows an average of δ^<13>C_<(V-PDB)> value of ‒29.796 ± 0.041‰ and δ^<18>O_<(V-SMOW)> value of 3.971 ± 0.062‰ (n = 44; 1σ). During a period of one year of analysis, a drift of 0.04‰ for both carbon and oxygen is observed for the reference CO_2 gas. NIST standards (NBS-20 limestone and NBS-21 graphite) and a laboratory diamond standard were analyzed to characterize the minimum volume of sample required to obtain carbon and oxygen isotopic composition with accuracy and precision <0.1‰. We also report here the routine analytical procedure for carbonate samples (calcite/aragonite and dolomite/siderite/magnesite) and elemental carbon (graphite and diamond). |
|
言語 |
en |
| 書誌情報 |
en : Science reports of Niigata University. (Geology)
巻 36,
p. 21-42,
発行日 2021-03
|
| 出版者 |
|
|
出版者 |
Department of Geology, Faculty of Science, Niigata University |
|
言語 |
en |
| ISSN |
|
|
収録物識別子タイプ |
PISSN |
|
収録物識別子 |
1349-1237 |
| 書誌レコードID |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA11436808 |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
36_21-42.pdf (6.3 MB)
