{"created":"2022-01-21T06:45:16.179533+00:00","id":2000226,"links":{},"metadata":{"_buckets":{"deposit":"c7e8701f-6ff0-4fb0-8c1b-581aea551901"},"_deposit":{"created_by":4,"id":"2000226","owner":"4","owners":[4],"owners_ext":{"displayname":"新潟大学附属図書館","username":"niigata_u"},"pid":{"revision_id":0,"type":"depid","value":"2000226"},"status":"published"},"_oai":{"id":"oai:niigata-u.repo.nii.ac.jp:02000226","sets":["176:177:178:1642746629845","453:456"]},"author_link":[],"item_1627361970403":{"attribute_name":"出版タイプ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_7_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2021-03","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"42","bibliographicPageStart":"21","bibliographicVolumeNumber":"36","bibliographic_titles":[{"bibliographic_title":"Science reports of Niigata University. (Geology)","bibliographic_titleLang":"en"}]}]},"item_7_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"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).","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_7_publisher_7":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Department of Geology, Faculty of Science, Niigata University","subitem_publisher_language":"en"}]},"item_7_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA11436808","subitem_source_identifier_type":"NCID"}]},"item_7_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1349-1237","subitem_source_identifier_type":"PISSN"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Satish-Kumar, Madhusoodhan","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Kiran, Sasidharan","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Abe, Miyako","creatorNameLang":"en"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","date":[{"dateType":"Available","dateValue":"2022-01-21"}],"displaytype":"detail","filename":"36_21-42.pdf","filesize":[{"value":"6.3 MB"}],"format":"application/pdf","licensetype":"license_note","url":{"objectType":"fulltext","url":"https://niigata-u.repo.nii.ac.jp/record/2000226/files/36_21-42.pdf"},"version_id":"ab7f4495-e2c3-4d30-bf3b-dc050e1589a5"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"carbon and oxygen isotopes","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"MAT-253 inlet system","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"NIST standard measurements","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"A new inlet system for microscale carbon and oxygen stable isotope analysis using dual inlet isotope ratio mass spectrometer at Niigata University, Japan","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"A new inlet system for microscale carbon and oxygen stable isotope analysis using dual inlet isotope ratio mass spectrometer at Niigata University, Japan","subitem_title_language":"en"}]},"item_type_id":"7","owner":"4","path":["456","1642746629845"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2022-01-21"},"publish_date":"2022-01-21","publish_status":"0","recid":"2000226","relation_version_is_last":true,"title":["A new inlet system for microscale carbon and oxygen stable isotope analysis using dual inlet isotope ratio mass spectrometer at Niigata University, Japan"],"weko_creator_id":"4","weko_shared_id":-1},"updated":"2022-12-15T04:35:44.869963+00:00"}