"Kushi Kudo,Sakae Toyoda,Keita Yamada,Naohiro Yoshida,Daisuke Sasano,Naohiro Kosugi,Akihiko Murata,Hiroshi Uchida,Shigeto Nishino","Source analysis of dissolved methane in Chukchi Sea and Bering Strait during summer-autumn of 2012 and 2013",,"Marine Chemistry",,"Vol. 243",,,2022,Apr.
"杉本颯馬,豊田栄,山田桂太","大気中微量水素の安定同位体比測定法開発","大気化学討論会（オンライン）",,,,,,2021,Nov.
"Motoo Ito,keita Yamada","Assessing the debris generated by the small carry-on impactor operated from the Hayabusa2 mission",,,,,,,2021,Sept.
"山田桂太,田中利明,中川麻悠子","アイソトポミクス健康診断法の開発","DLab Challenge：未来社会DESIGN機構研究奨励金（2020年度支援開始分）報告会",,,,,,2021,Aug.
"工藤久志,谷 篤史,山田桂太,吉田尚弘","氷衛星条件を想定したガスハイドレートの生成に伴うメタンガスの安定炭素・水素同位体分別","2021年度日本地球化学会第68回年会",,,,,,2021,Aug.
"山田桂太,田中利明,中川麻悠子","アイソトポミクス健康診断法の開発","DLab Dialog Day Spring 2021",,,,,,2021,Mar.
"山田桂太,田中利明,中川麻悠子","アイソトポミクス健康診断法の開発-がん細胞代謝物の解析-","未来社会DESIGN 機構 研究打ち合わせ会議",,,,,,2021,Jan.
"石川真帆,下坂琢哉,豊田栄,山田桂太,中川麻悠子,Zhang Naizhong,吉田尚弘","SIトレーサブルな安定炭素同位体比標準ガスの開発","日本地球化学会年会",,,,,,2020,Nov.
"山田桂太,田中利明,中川麻悠子","アイソトポミクスを用いたがん細胞代謝物の解析",,"東工大ニュース",,,,,2020,Sept.
"Gilbert, A.,Sherwood Lollar, B.,Musat, F.,Giunta, T.,Chen, S.,Kajimoto, Y.,Yamada, K.,Yoshida, N.,Ueno, Y.","Intramolecular isotopic evidence for bacterial oxidation of propane in subsurface natural gas reservoirs.",,"Proceedings of the National Academy of Sciences of the United States of America",,"Vol. 116",,"pp. 6653-6658",2019,Oct.
"工藤久志,豊田栄,山田桂太,吉田尚弘,小杉如央,吉川久幸,村田昌彦,西野茂人","「みらい」2013年秋季北極航海（MR13-06航海）の 定点観測点における溶存メタンの時間変動","2019年度日本海洋学会秋季大会",,,,,,2019,Sept.
"Naizhong Zhang,Mang Lin,keita Yamada,Akihiro Kano,Qi Liu,Naohiro Yoshida,Ryo Matsumoto","The effect of H2O2 treatment on stable isotope analysis (δ13C, δ18O and Δ47) of various carbonate minerals",,"Chemical geology",,,,,2019,May
"D. G. Diomande,E. Martineau,A. Gilbert,P. Nun,A. Murata,K.Yamada,N. Watanabe,I. Tea,R. J. Robins,N. Yoshida,G. S. Remaud","Position-specific isotope analysis of biomolecules by isotopic 13C Nuclear Magnetic Resonance","Stable Isotopes in the Biosphere workshop 2019",,,,,,2019,Jan.
"ada, Y.,Bowers, G.,Enoto, T.,Kamogawa, M.,Nakamura, Y.,Morimoto, T.,Smith, D. M.,Furuta, Y.,Nakazawa, K.,Yuasa, T.,Matsuki, A.,Kubo, M.,Tamagawa, T.,Makishima, K.,Tsuchiya, H.,Naohiro Yoshida","Lightning-triggered termination of a gamma-ray glow in a Japanese winter thunderstorm","2018 AGU Fall Meeting",,,,,,2018,Dec.
"奥村 優,中川麻悠子,丹 佑太,豊田 栄,山田桂太,吉田尚弘","酸素濃度の異なる微生物生態系における脂肪酸 δC 及び δH 解析","地球化学会年会",,,,,,2018,Sept.
"三沢亮太,山田桂太,吉田尚弘","イソバリンの部位別炭素安定同位体比測定法の確立","日本地球化学会年会2018",,,,,,2018,Sept.
"白瀧滉司,宮澤謙太,山田桂太,吉田尚弘","グリシンの部位別炭素安定同位体比測定法の確立","日本地球化学会年会2018",,,,,,2018,Sept.
"神藤拓実,中川麻悠子,山田桂太,吉田尚弘","大気中の含酸素揮発性有機化合物の濃縮と分子内部位別炭素同位体比分析手法の開発","日本地球化学会年会2018",,,,,,2018,Sept.
"徐 佳欣,Sakae Toyoda,keita Yamada,NAOHIRO YOSHIDA","Development of on-line analytical method for hydrogen stable isotope ratio in H2 from anthropogenic sources","日本地球化学会年会2018",,,,,,2018,Sept.
"Mayuko Nakagawa,Donato Giovannelli,Costantino Vetriani,Masafumi Kameya,Alexis Gilbert,Keita Yamada,Naohiro Yoshida","Carbon and Hydrogen stable isotopic signatures of fatty acids produced by reductive tricarboxylic acid cycle","Extremophiles 2018",,,,,,2018,Sept.
"Konomi Suda,Alexis Romain Gilbert,Hisahiro Ueda,Takuya Saitou,Tomohiko Sato,Na,keita Yamada,NAOHIRO YOSHIDA,Yuichiro Ueno,Akihiro Takahashi,Na,keita Yamada,NAOHIRO YOSHIDA,Yuichiro Ueno,松井 洋平,中井 亮佑,玉木 秀幸,金子 雅紀,Akihiro Takahashi,森川 徳敏","Geochemical study for serpentinite-hosted hyperalkaline hot spring in Hakuba Happo, Japan","日本地球惑星連合2018",,,,,,2018,May
"Mayuko Nakagawa,Keita Yamada,Sakae Toyoda,Kazuyuki Kita,Yasuhito Igarashi,Shingo Komatsu,Kentaro Yamada,Naohiro Yoshida","Characterization of hydrocarbons in aerosols and investigation of biogenic sources as a carrier of radiocesium isotopes",,"GEOCHEMICAL JOURNAL",,"Vol. 52","No. 2","p. 163-172",2018,Mar.
"Takeshi Kinase,Kazuyuki Kita,Yasuhito Igarashi,Kouji Adachi,Kazuhiko Ninomiya,Atsushi Shinohara,Hiroshi Okochi,Hiroko Ogata,Masahide Ishizuka,Sakae Toyoda,keita Yamada,Naohiro Yoshida,Yuji Zaizen,Masao Mikami,Hiroyuki Demizu,Yuichi Onda","The seasonal variations of atmospheric 134,137Cs activity and possible host particles for their resuspension in the contaminated areas of Tsushima and Yamakiya, Fukushima, Japan",,"Progress in Earth and Planetary Science",,"Vol. 5","No. 1","p. 12",2018,Feb.
"Brian Fry,James F. Carter,Keita Yamada,Naohiro Yoshida,Dieter Juchelka","Position‐specific 13C/12C analysis of amino acid carboxyl groups ? automated flow‐injection analysis based on reaction with ninhydrin.",,"Rapid Commun. Mass Spectrom.",,"Vol. 32",,"pp. 992-1000",2018,Jan.
"Kushi Kudo,keita Yamada,Sakae Toyoda,Naohiro Yoshida,Daisuke Sasano,Naohiro Kosugi,Masao Ishii,Hisayuki Yoshikawa,Akihiko Murata,Hiroshi Uchida,Shigeto Nishino","Spatial distribution of dissolved methane and its source in the western Arctic Ocean",,"Journal of Oceanography",,"Vol. 74",,"p. 305-317",2018,Jan.
"N. Zhang,R. Matsumoto,keita Yamada,N. Yoshida","Near-Equilibrium Temperatures Derived from the Clumped Isotope Signatures of Methane Seep Carbonate: Japan Sea and the Northwest Pacific",,,,,,,2018,
"M. Julien,A. Gilbert,K. Yamada,R. J. Robins,P. H?hener,N. Yoshida,G. S. Remaud.","Expanded uncertainty associated with determination of isotope enrichment factors: Comparison of two-point calculation and Rayleigh-plot",,,,"Vol. 176",,"pp. 367-373",2018,
"大曽根達則,山田桂太,吉田尚弘","微小RNAにおける安定同位体計測","2017年度日本地球化学会年会",,,,,,2017,Sept.
"工藤久志,豊田栄,山田桂太,吉田尚弘,小杉如央,笹野大輔,石井雅男,吉川久幸,村田昌彦,内田裕,西野茂人","2012 年と 2013 年の夏季の西部北極海における溶存メタンの起源解析","2017年度日本地球化学会年会",,,,,,2017,Sept.
"山田桂太,Alexis Gilbert,藤原期,佐山大樹,赤坂麻衣,吉田尚弘","オンライン熱分解同位体比質量分析法による含酸素揮発性有機化合物の部位別同位体分析","2017年度日本地球化学会年会",,,,,,2017,Sept.
"Naohiro Yoshida,Gerald Remaud,Claude Guillou,Alexi Gilbert,Keita Yamada,Joachim Mohn","Preparation of standard materials for position specific isotope distributions","Isotopes 2017",,,,,,2017,July
"西岡拓哉,北 和之,林菜穂,佐藤武尊,五十嵐 康人,足立 光司,財前祐二,豊田 栄,山田 桂太,吉田 尚弘,牧 輝弥,石塚 正秀,二宮 和彦,篠原 厚,大河内 博,阿部 善也,中井 泉,川島洋人,古川 純,羽田野裕子,恩田 裕一","夏季-秋季における放射性セシウム大気再飛散のメカニズム","日本地球惑星科学連合大会2017",,,,,,2017,May
"須田好,Gilbert Alexis,山田桂太,吉田尚弘,上野雄一郎","白馬八方の蛇紋岩温泉に由来する炭化水素の分子および分子内炭素安定同位体解析","日本地球惑星科学連合大会2017",,,,,,2017,May
"A. Gilbert,K. Suda,K. Yamada,Y. Ueno,N. Yoshida","Position-specific isotope analysis by on-line pyrolysis coupled to IRMS","American Geophysical Union Fall Meeting 2016",,,,,,2016,Dec.
"A. Gilbert,K. Yamada,M. Julien,N. Yoshida,G. Remaud,R. Robins","Recent insights into intramolecular 13C isotope composition of biomolecules","American Geophysical Union Fall Meeting 2016",,,,,,2016,Dec.
"N. Yoshida,G. Remaud,C. Guillou,A. Gilbert,K. Yamada","Development of standard materials for intramolecular distributions of C, H, O, N isotopes in small organic molecules.","Technical Meeting on the Development of IAEA Stable Isotope Reference Products",,,,,,2016,Nov.
"Naohiro Yoshida,Keita Yamada,Gilbert Alexis,Taiki Sayama,Mai Akasaka","Position-specific carbon isotope analysis of acetone by on-line pyrolysis IRMS","ISI2016",,,,,,2016,Oct.
"Mayuko Nakagawa,Ken Kurokawa,Hiroshi Mori,Satoshi Hanada,Keita Yamada,Eri Nishiyama,Naohiro Yoshida","Quantification of microbial activities in microbial mats from metagenomic and isotopic analyses: a case study of Nakabusa hot spring, Japan","ISI2016",,,,,,2016,Oct.
"Kita.K,Kinase.T,Igarashi.Y,Adachi.K,Yamada.K,Toyoda.S,Yoshida.N,Ninomiya?K,Shinohara?A,Okochi.H,Ishizuka.M,Maki.T,Abe.Y,Nakai.I,Furukawa.J,?Onda.Y","Re-suspension Processes of Radioactive Cs Emitted by the FNDPP Accident in Summer and Autumn ? Possibility of Biosphere-Atmosphere Circulation of Radioactive Cs","Goldschmidt2016",,,,,,2016,June
"Yamada.K,Gilbert.A,Ohishi.K,Akasaka.M,Mineta.Y,Tajima.H,Kawakami.N,Yoshimura.R,?Yoshida.N","Measurement of Stable Carbon Isotopic Composition of Breath and Urinary Acetone","Goldschmidt2016",,,,,,2016,June
"Gilbert.A,Suda.K,Yamada.K,Ueno.Y,?Yoshida.N","Intramolecular Carbon Isotope Signature of Thermogenic and Abiotic Hydrocarbons","Goldschmidt2016",,,,,,2016,June
"Zhang.N,Yamada.K,Yoshida.N","xStudy of Land Snail Shell and Body Fluid Oxygen Isotopic Compositions from Laboratory Culturing Experiment of Subspecies Acusta Despecta Sieboldiana","Goldschmidt2016",,,,,,2016,June
"Kudo.K,Toyoda.S,Yamada.K,Yoshida.N,Sasano.D,Kosugi.N,Ishii.M,Yoshikawa.H,Murata.A,Uchida.H,Nishino.S","Spacial Distribution of Dissolved Methane in the Western Arctic Ocean","Goldschmidt2016",,,,,,2016,June
"山田 桂太,豊田 栄,吉田 尚弘","夏/秋季における大気中の放射性セシウムの再飛散過程?生物―大気循環の可能性","日本地球惑星科学連合大会",,,,,,2016,May
"M. Nakagawa,O. Yagi,Y. Tan,S. Toyoda,K. Yamada,N. Yoshida","Seasonal change of particulate organic carbon isotopic ratios and high production in anaerobic layer in the monomictic lake, waku-ike (Nagano Prefecture)","IsoEcol2016",,,,,,2016,Apr.
"吉田尚弘,豊田 栄,山田桂","福島第一原子力発電所事故により放出された放射性セシウムの大気再飛散と植生との関係","大気化学討論会2015",,,,,,2015,Oct.
"長谷川 潤,中川 麻悠子,山田 桂太,吉田 尚弘","長野県、中房温泉バイオマット中生態系形成過程における脂肪酸炭素同位体比解析","日本微生物生態学会第30回大会",,,,,,2015,Oct.
"Sakae Toyoda,Keita Yamada,Naohiro Yoshida","Continuous measurements of xCO2 and xCH4 in the seawater and overlying air in the western Arctic Ocean","The 18th WMO/IAEA Meeting on Carbon Dioxide, Other Greenhouse Gases, and Related",,,,,,2015,Sept.
"山田 桂太,吉田 尚弘","有機分子の炭素安定同位体計測の最前線","表示・起源分析技術研究懇談会第13回講演会",,,,,,2015,June
"工藤久志,豊田栄,山田桂太,吉田尚弘,笹野大輔,小杉如央,石井雅男,吉川久幸,村田昌彦,内田裕,西野茂人","融氷期から結氷初期にかけての西部北極海における溶存メタンの水平・鉛直分布","日本海洋学会春季大会",,,,,,2015,Mar.
"S. Toyoda,K. Kudo,F. Breider,K. Yamada,N. Yoshida,D. Sasano,N. Kosugi,M. Ishii,H. Yoshikawa-Inoue,S. Nishino,H. Uchida,A. Murata","Distributions of methane, nitrous oxide, and their isotopomers in the Arctic Ocean","第5回極域科学シンポジウム",,,,,,2014,Dec.
"北和之,田中美佐子,木名瀬 健,山口隆亮,田村匠,木野日美子,出水宏幸,五十嵐康人,三上正男,足立光司,篠原厚,二宮和彦,大河内洋,石塚正秀,川島 洋人,中井泉,阿部善也,渡邊明,鶴田治雄,恩田裕一,吉田尚弘,豊田栄,山田 桂太","福島において観測された大気放射性セシウムの再飛散と季節変動","第20回大気化学討論会",,,,,,2014,Oct.
"Naohiro Yoshida,Tarin Nimmanwudipong,Alexis Gilbert,Keita Yamada","Online methods for the position specific analysis of 13C in some light organic compounds","Arbeitsgemeinschaft Stabile Isotopen (ASI)",,,,,,2014,Oct.
"M. Akasaka,K. Yamada,A. Gilbert,S. Toyoda,N. Yoshida","Determination of intramolecular carbon isotope distribution of acetone by sealed tube pyrolysis","ISI2014",,,,,,2014,July
"S. Toyoda,K. Yamada,N. Yoshida","Isotopomer ratios of N2O emitted from biomass burning","ISI2016",,,,,,2014,July
"T. Nimmanwudipong,K. Yamada,N. Yoshida","Development of an analytical method for the determination of the position specific 13C isotopic composition of organic acids","ISI2014",,,,,,2014,July
"K. Yamada,K. Ohishi,A. Gilbert,M. Akasaka,S. Toyoda,N. Yoshida,R. Yoshimura","Variations in carbon isotope ratio of acetone in urine","ISI2014",,,,,,2014,July
"N. Zhang,keita Yamada,N. Yoshida","Discrepancy of calibrated clumped isotope values(Δ47）generated from absolute reference frame shift","ISI2014",,,,,,2014,July
"N. Zhang,K. Yamada,N. Yoshida","Discrepancy of calibrated clumped isotope values(△47）generated from absolute reference frame shift","ISI2014",,,,,,2014,July
"Kazuyuki Kita,Misako Tanaka,Takeshi Kinase,HImiko Kino,Yasuhito Igarashi,Masao Mikami,Kouji Adachi,Hiroshi Okochi,Naohiro Yoshida,Sakae Toyoda,Keita Yamada,Hiroto Kawashima,Masahide Ishizuka,Izumi Nnakai,Yoshinari,Kazuhiko Ninomiya,Atsushi Shinohara,Yuichi Onda","Re-suspension of radioactive cesium in Fukushima","Asia Oceania Geosciences Society 11th Annual Meeting",,,,,,2014,July
"K. Kudo,S. Toyoda,K. Yamada,N. Yoshida,D. Sasano,N. Kosugi,M. Ishii,H. Yoshikawa,A. Murata,H. Uchida,S. Nishino","Horizontal and vertical distribution of methane concentration and stable isotope ratio of methane dissolved in the Arctic Ocean of MR12-E03 cruise","ISI2014",,,,,,2014,July
"吉田 尚弘,豊田 栄,山田 桂太","放射性セシウムの大気再飛散と気象条件の関係","日本地球惑星科学連合2014年大会",,,,,,2014,May
"吉田 尚弘,豊田 栄,山田 桂太","福島県浪江町で観測された大気放射能濃度と、エアロゾル組成との関係の推定","日本地球惑星科学連合2014年大会",,,,,,2014,May
"Naizhong Zhang,Keita Yamada,Naohiro Yoshida","Factors controlling carbon isotopic composition of land snail shells estimated from lab culturing experiment","EGU General Assembly 2014",,,,,,2014,Apr.
"上野 雄一郎,山田桂太,吉田 尚弘","カンブリア紀前期における生物ポンプの強化：南中国三峡地域のエディアカラ系-下部カンブリア系の分子種別炭素同位体比測定","日本地球惑星科学連合2014年大会",,,,,,2014,Apr.
"吉田 尚弘,豊田 栄,山田 桂太","Multi-isotopic observation of N2O and CH4 in stations, including Hateruma","49th Meeting of AGAGE Scientists and Cooperating Networks",,,,,,2014,Apr.
"Suda K.,Ueno Y.,Yoshizaki M.,Hitomi Nakamura,Eri Nishiyama,Yoshino K.,Hongoh Y.,Kawachi K.,Omori S.,keita Yamada,Yoshida N.,Maruyama S.","Origin of methane in serpentinite-hosted hydrothermal system: the CH4-H2-H2O hydrogen isotope systematics of the Happo hot spring.",,"Earth and Planetary Science Letters",,,,,2014,
"山田桂太,Alexis Gilbert,吉田尚弘","有機分子の分子内安定炭素同位体分布計測法の展開",,"分析化学",,"Vol. 63","No. 3","pp. 195-203",2014,
"武田浩平,山田桂太,吉田尚弘","日本の都市環境中大気エタノール濃度の計測","第19回大気化学討論会",,,,,,2013,Nov.
"小松慎吾,吉田尚弘,五十嵐康人 北和之,大河内博,緒方裕子,山田桂太,豊田栄,山之越理恵","福島県内における放射性エアロゾル中の炭化水素類の分析","第19回大気化学討論会",,,,,,2013,Nov.
"笹野大輔,石井雅男,小杉如央,豊田 栄,山田桂太,工藤久志,吉田尚弘,吉川久幸,三船尊久,川合美千代,村田昌彦,内田 裕,西野茂人,菊池 隆","北極海表面で観測された高濃度CH4およびCO2との関連性","2013年日本地球化学会第60回年会","2013年日本地球化学会第60回年会講演要旨集",,,,"p. 239",2013,Sept.
"Wu Chen,山田桂太,角川 修,松永明子,Tarin Nimmanwudipong,Alexis Gilbert,吉田尚弘","茶葉中カフェインの安定同位体炭素と窒素の解析手法の開発","2013年日本地球化学会第60回年会","2013年日本地球化学会第60回年会講演要旨集",,,,"p. 146",2013,Sept.
"Alain Chaintreau,Wolfgang Fieber,Horst Sommer,Alexis Gilbert,Keita Yamada,Naohiro Yoshida,Alain Pagelot,Detlef Moskau,Aitor Moreno,J?rgen Schleucher,Fabiano Reniero,Margaret Holland,Claude Guillou,Virginie Silvestre,Serge Akoka,G?rald S. Remaud","Site-specific 13C content by quantitative isotopic 13C Nuclear Magnetic Resonance spectrometry: A pilot inter-laboratory study",,"Analytica Chimica Acta",,"Vol. 788",,"pp. 108-113",2013,
"Alexis Gilbert,Keita Yamada","Accurate method for the determination of intramolecular C-13 isotope composition of ethanol from aqueous solutions",,"Analytical Chemistry",,"Vol. 85","No. 14","pp. 6566-6570",2013,
"Naohiro Yoshida,Osamu Abe,Mikhail Vasilev,Keita Yamada,Prosenjit Ghosh,Maki Morimoto","Precision and long-term stability of clumped isotope analysis of CO2 by a small sector isotope ratio mass spectrometer",,"Rapid communications in mass spectrometry",,"Vol. 27",,"pp. 207-215",2013,
"Alexis Gilbert,Keita Yamada","Exploration of intramolecular C-13 isotope distribution in long chain n-alkanes (C-11-C-31) using isotopic C-13 NMR",,"Organic Geochemistry",,"Vol. 62",,"pp. 56-61",2013,
"Antra Priyadarshi,Jason Hill-Falkenthal,Mark Thiemens,Naohiro Yoshida,Sakae Toyoda,Keita Yamada,Arata Mukotaka,Ayako Fujii,Mitsuo Uematsu,Shiro Hatakeyama,Izumi Noguchi,Yukihiro Nojiri,Hiroshi Tanimoto","Detection of radioactive 35S at Fukushima and other Japanese sites",,"Journal of Geophjsical Research: Atmospheres",,"Vol. 118",," 1020?1027",2013,
"Gilbert Alexis,Keita Yamada,Naohiro Yoshida","Isotopic 13C MMR Reveals Heterogeneity in the 13C-isotopomer distribution of Long-Chain n-alkanes(C11-C31)","2012年度年日本地球化学会第59回年会","2012年度年日本地球化学会第59回年会講演要旨集","日本地球化学会",,,"p. 185",2012,Sept.
"山田健太郎,佐々木一謹,佐藤寿年,上野雄一郎,山田桂太,小宮 剛,吉田尚弘,丸山茂徳","南中国三峡地域のエディアカラ紀-前期カンブリア紀堆積層中の分子化石を用いた生物地球化学","2012年度年日本地球化学会第59回年会","2012年度年日本地球化学会第59回年会講演要旨集","日本地球化学会",,,"p. 373",2012,Sept.
"Zhang Naizhong,Keita Yamada,Naohiro Yoshida","Diet effect on δ13C of land snail (Helix aspersa) shell carbonate","2012年度年日本地球化学会第59回年会","2012年度年日本地球化学会第59回年会講演要旨集","日本地球化学会",,,"p. 221",2012,Sept.
"Mikhail Vasiliev,Keita Yamada,Naohiro Yoshida","Clumped isotopes analyses for body water records on marine and terrestrial biogenic carbonates from Japan","2012年度年日本地球化学会第59回年会","2012年度年日本地球化学会第59回年会講演要旨集","日本地球化学会",,,"p. 23",2012,Sept.
"山田桂太,Alexis Gilbert,吉田尚弘","地球化学における有機分子の分子内炭素同位体比分析の現状と展望","2012年度日本地球化学会第59回年会","2012年度日本地球化学会第59回年会講演要旨集","日本地球化学会",,,"p. 184",2012,Sept.
"鈴木彌生子,力石嘉人,山田桂太,吉田尚弘","元素分析計?同位体比質量分析計による有機物試料の炭素・窒素・酸素安定同位体比分析の試験所間比較",,"BUNSEKI KAGAKU",,"Vol. 61","Num. 9","pp. 805-810",2012,
"Alexis Gilbert,Ryota Hattori,Virginie Silvestre,Nariaki Wasano,Serge Akoka,Satoshi Hirano,Keita Yamada,Naohiro Yoshida,G?rald S. Remaud","Comparison of IRMS and NMR spectrometry for the determination of intramolecular 13C isotope composition: Application to ethanol",,"Talanta",,"Vol. 99",,"pp. 1035-1039",2012,
"Chen Wu,Keita Yamada,Osamu Sumikawa,Akiko Matsunaga,Alexis Gilbert,Naohiro Yoshida","Development of a methodology using gas chromatography-combustion-isotope ratio mass spectrometry for the determination of the carbon isotope ratio of caffeine extracted from tea leaves (Camellia sinensis)",,"Rapid Communications in Mass Spectrometry",,"Vol. 26",,"pp. 978-982",2012,
"Kazumi Yoshiya,M.D. Manabu Nishizawa,Yusuke Sawaki,Yuichiro Ueno,Tsuyoshi Komiya,Keita Yamada,Naohiro Yoshida,Takafumi Hirata,Hideki Wad,Shigenori Maruyama","In-situ iron isotope analyses of pyrite and organic carbon isotope ratios in the Fortescue Group: metabolic variations of a late Archean ecosystem",,"Precambrian Research",,"Vol. 212",,"pp. 169-193",2012,
"Mariko Kobayashi,Shinsuke Kawagucci,Shohei Hattori,Keita Yamada,Yuichiro Ueno,Ken Takai,Naohiro","Hydrogen isotope systematics of H2-H2O-CH4 during hydrogenotrophic methanogenesis","AGU Fall Meeting 2011",,,,,,2011,Dec.
"Alexis Gilbert,Keita Yamada,Naohiro Yoshida","Insights into the intramolecular 13C isotope distribution of long chain n-alkanes studied by isotopic 13C NMR","2011年度日本地球化学会","2011年度日本地球化学会要旨集","日本地球化学会",,,"p. 391",2011,Sept.
"林えれな,山田桂太,吉川知里,吉田 磨,今井 翔,窪田千穂,豊田 栄,渡邉 拓,吉田尚弘","炭素・水素同位体を用いた亜熱帯南太平洋におけるメタンの生成消滅過程の解析","2011年度日本海洋学会秋季大会",,,,,,2011,Sept.
"Naizhong Zhang,Keita Yamada,Naohiro Yoshida","Variations of 13C 16O18O and its controlling factors in the atmosphere of Yokohama, Japan","2011年度日本地球化学会","2011年度日本地球化学会要旨集","日本地球化学会",,,"p. 221",2011,Sept.
"Tarin Nimmanwudipong,Keita Yamada,Naohiro Yoshida,Osamu Sumikawa","Measurement of carbon isotope ratio of theanine in tea leaves","2011年度日本地球化学会","2011年度日本地球化学会要旨集","日本地球化学会",,,"p. 225",2011,Sept.
"LI NA,山田 桂太,Ryota Hattori,柴田 裕樹,Gilbert Alexis,吉田 尚弘","植物由来のアセトアルデヒドの分子内同位体分布に与えるエタノール酸化経路の影響","2011年度日本地球化学会","2011年度日本地球化学会要旨集","日本地球化学会",,,"p. 224",2011,Sept.
"小林真理子,川口慎介,服部祥平,山田桂太,上野雄一郎,高井研,吉田尚弘","H2-H2O-CH4の水素同位体システマティクスから考える微生物由来メタンの水素同位体比決定機構の解明","2011年度日本地球化学会","2011年度日本地球化学会要旨集","日本地球化学会",,,"p. 135",2011,Sept.
"奥野峻徳,山田桂太,Alexis Gilbert,Na Li,吉田尚弘","アミノ酸の分子内炭素安定同位体比測定","2011年度日本地球化学会","2011年度日本地球化学会要旨集","日本地球化学会",,,"p. 223",2011,Sept.
"向高 新,豊田 栄,山田桂太,藤井彩子,吉田尚弘","マイクロ波放電分解法による硝酸塩の三種酸素同位体測定法の開発","2011年度日本地球化学会","2011年度日本地球化学会要旨集","日本地球化学会",,,"pp. 112",2011,Sept.
"MIKHAIL VASILEV,keita Yamada,NAOHIRO YOSHIDA","Feasibility of “clumped isotopes” analysis of land-snails carbonate as a temperature indicator collected from Japan","2011年度日本地球化学会","2011年度日本地球化学会要旨集","日本地球化学会",,,"p. 7",2011,Sept.
"豊田 栄,下島涼介,山田桂太,吉田尚弘","バイオマス燃焼で発生するN2O のアイソトポマー比","2011年度日本地球化学会","2011年度日本地球化学会要旨集","日本地球化学会",,,"p. 30",2011,Sept.
"Sakae Toyoda,Midori Yano,S. Nishimura,H. Akiyama,A. Hayakawa,Keisuke Koba,S. Sudo,K. Yagi,Akiko Makabe,Yoshifumi Tobari,N. O. Ogawa,Nao Ohkouch,Keita Yamada,Naohiro Yoshida","Characterization and production and consumption processes of N2O emitted from temperate agricultural aoils determined via isotopomer ratio analysis",,"Global Biogeochem. Cycles",,"Vol. 17",,,2011,May
"Sakae Toyoda,Yuuri Suzuki,Shohei Hattori,Keita Yamada,Ayako Fujii,Naohiro Yoshida,Rinako Uno,Kouki Murayama,Hiroshi Shiomi","Isotopomer Analysis of Production and Consumption Mechanisms of N2O and CH4 in an Advanced Wastewater Treatment System",,"Environ. Sci. Technol.",,"Vol. 45","No. 3","pp. 917?922",2010,Dec.
"菊池麻希子,山田桂太,服部良太,吉田尚弘","大気中酢酸の分子内炭素安定同位体比測定","2010年度日本地球化学会第57回年会","2010年度日本地球化学会第57回年会講演要旨集","度日本地球化学会",,,"p. 212",2010,Sept.
"和田亮一,坂井三郎,二階堂雅人,相原光人,大河内直彦,岡田典弘,山田桂太,吉田尚弘","耳石の同位体分析によるシーラカンスの生息水深推定","2010年度日本地球化学会第57回年会","2010年度日本地球化学会第57回年会講演要旨集","日本地球化学会",,,"p. 125",2010,Sept.
"今藤泰輔,山田桂太,野中最子,永西修,樋口浩二,真貝拓三,小林洋介,吉田尚弘","反芻動物起源メタンの安定同位体比の日変動と要因解明","2010年度日本地球化学会第57回年会","2010年度日本地球化学会第57回年会講演要旨集","日本地球化学会",,,"p. 217",2010,Sept.
"リナ,山田桂太,服部良太,柴田裕樹,吉田尚弘","アセトアルデヒドの分子内炭素同位体比のオンライン計測","2010年度地球化学会大57回年会","2010年度地球化学会大57回年会講演要旨集","日本地球化学会",,,"p. 46",2010,Sept.
"Ryota Hattori,Keita Yamada,Hiroki Shibata,Satoshi Hirano,Osamu Tajima,Naohiro Yoshida","Measurement of the Isotope Ratio of Acetic Acid in Vinegar by HS-SPME-GC-TC/C-IRMS",,"J. Agric. Food Chem,",,"Vol. 58",,"pp. 7115-7118",2010,May
"Keita Yamada,Ryota Hattori,Yuji Ito,Hiroyuki Shibata,Naohiro Yoshida","Determination of carbon isotope ratios of methanol and acetaldehyde in air samples by gas chromatography-isotope ratio mass spectrometry combined with headspace solid-phase microextraction",,"Isotopes in Environmental and Health Studies",,"Vol. 46",,"pp. 1?8",2010,
"Hiroyuki Kimura,Kousuke Mori,Hiroaki Nashimoto,Shohei Hattori,Keita Yamada,Keisuke Koba,Naohiro Yoshida,Kenji Kato","Biomass production and energy source of thermophiles in a Japanese alkaline geothermal pool",,"Environmental Microbiology",,"Vol. 12","No. 2","pp. 480-489",2010,
"柴田裕樹,山田桂太,菊池麻希子,服部良太,豊田 栄,吉田尚弘","マイクロ固相抽出―ガスクロマトグラフィー同位体比質量分析法による揮発性有機化合物の水素安定同位体比解析","第15回大気化学討論会","第15回大気化学討論会講演要旨集","大気化学研究会",,,"p. 99",2009,Oct.
"稲葉光亮,山田桂太,吉田尚弘,遠嶋康徳,町田敏暢,高橋善幸","安定同位体比を用いたNovosibirskにおける大気中メタンに対する各生成源の寄与推定","第15回大気化学討論会","第15回大気化学討論会講演要旨集",,,,"p. 70",2009,Oct.
"豊田 栄,矢野 翠,早川 敦,秋山博子,西山誠一,須藤重人,木庭啓介,山田桂太,吉田尚弘","アイソトポマー比を用いた農耕土壌起源N２Oのキャラクタリゼーションおよび全球放出推定","第15回大気化学討論会","第15回大気化学討論会講演要旨集","大気化学研究会",,,"p. 22",2009,Oct.
"吉田 磨,今井 翔,河野 恒平,豊田 栄,窪田 千穂,藤井 彩子,山田 桂太,渡邉 修一,吉田 尚弘","太平洋WOCE-P01・P03・P21における溶存メタンの動態","日本地球化学会2009年会","日本地球化学会2009年会講演要旨集","日本地球化学会","Vol. 57",," 337",2009,Sept.
"阿部 理,杉原 薫,森本 真紀,山田 桂太,吉田 尚弘","サンゴ骨格炭酸塩の13C-18O結合度と生育水温との関係","日本地球化学会2009年会","日本地球化学会2009年会講演要旨集","日本地球化学会","Vol. 57",,"p. 30",2009,Sept.
"山田健太郎,上野雄一郎,山田桂太,吉田尚弘,丸山茂徳","南中国のエディアカラ紀/カンブリア紀境界層から得られた長鎖n-アルカンの起源","日本地球化学会年会2009年会","日本地球化学会2009年会講演要旨集","日本地球化学会","Vol. 57",,"p. 19",2009,Sept.
"Mikhail Vasiliev,Prosenjit Ghosh,Sarkar Soumen,Parthasarathi Ghosh,Keita Yamada,Naohiro Yoshida","Doubly substituted isotopomer analysis for carbonate leotemperature and latitudinal reconstruction of Indian plate during Phanerozoic period","日本地球化学会2009年会","日本地球化学会2009年会講演要旨集","日本地球化学会","Vol. 57",," 339",2009,Sept.
"Wu Chen,Keita Yamada,Sakae Toyoda,Naohiro Yoshida,Rina Kono,Koki Murayama","Investigation of methane emission during sewage water treatment in Japan through carbon isotope ratio","日本地球化学会2009年会","日本地球化学会2009年会講演要旨集","日本地球化学会","Vol. 57",,"p. 260",2009,Sept.
"山田桂大,柴田裕樹,山田桂太,服部良太,豊田 栄,吉田尚弘","植物由来揮発性有機化合物のマイクロ固相抽出-ガスクロマトグラフィー同位体比質量分析法による炭素安定同位体比分析","日本地球化学会2009年会","日本地球化学会2009年会講演要旨集","日本地球化学会","Vol. 57",,"p. 237",2009,Sept.
"Keita Yamada,Ryota Hattori,Yuji Ito,Hiroki Shibata,Naohiro Yoshida","Carbon isotopic signatures of methanol and acetaldehyde emitted from biomass burning source",,"Geophys. Res. Lett.",,,," L18897",2009,
"Maki Morimoto,Keita Yamada,Naohiro Yoshida,Prosenjit Ghosh","Estimation of allogenic and authigenic carbonates in sediments from Lake Hovsgol, Mongolia using multi-isotope analysis","4th International Symposium on Isotopomers","4th International Symposium on Isotopomers proceedings","ISI2008 Science Committee",,,"pp. 133-134",2008,Oct.
"Sakae Toyoda,Midori Yano,Sei-ichi Nishimura,Keisuke Koba,Keita Yamada,Naohiro Yoshida","Isotopomeric analysis of N2O emitted from temperate agricultural soils","4th International Symposium on Isotopomers","4th International Symposium on Isotopomers proceedings","ISI2008 Science Committee",,,"pp. 202-205",2008,Oct.
"Shou Imai,Sakae Toyoda,Ayako Fujii,Keita Yamada,Naohiro Yoshida","Distribution of Methane at WOCE-P01･P03 lines in the North Pacific","4th International Symposium on Isotopomers","4th International Symposium on Isotopomers proceedings","ISI2008 Science Committee",,,"pp. 176-182",2008,Oct.
"Chiho Kubota,Keita Yamada,Naohiro Yoshida","Methane production and consumption in the Sea of Okhotsk based on carbon isotopic ratio","4th International Symposium on Isotopomers","4th International Symposium on Isotopomers proceedings","ISI2008 Science Committee",,,"pp. 169-175",2008,Oct.
"Keita Yamada,Ryota Hattori,Naohiro Yoshida,Hiroki Shibata","Isotopic characterization of atmospheric methanol emitted from biomass burning and plant leaves","4th International Symposium on Isotopomers","4th International Symposium on Isotopomers proceedings","ISI2008 Science Committee",,,"pp. 160-162",2008,Oct.
"Nozomi Suzuki,Keisuke Koba,Yohei Matsui,Keita Yamada,Naohiro Yoshida","Influence of Long-term, Whole-Ecosystem Experiments on Methane Dynamics in Arctic Soils","4th International Symposium on Isotopomers","4th International Symposium on Isotopomers proceedings","ISI2008 Science Committee",,,"pp. 152-153",2008,Oct.
"Keita Yamada,Mariko Hayashida,Hiroki Shibata,Sakae Toyoda,Naohiro Yoshida","Isotopic characterization of atmospheric hydrogen emitted from biomass burning","4th International Symposium on Isotopomers","4th International Symposium on Isotopomers proceedings","ISI2008 Science Committee",,,"pp. 163-164",2008,Oct.
"Hiroki Shibata,Keita Yamada,Sakae Toyoda,Naohiro Yoshida","Isotopic characterization of molecular hydrogen emitted from automobile exhaust","4th International Symposium on Isotopomers","4th International Symposium on Isotopomers proceedings","ISI2008 Science Committee",,,"pp. 149-151",2008,Oct.
"Yota Kobayashi,Prosenjit Ghosh,Keita Yamada,Sakae Toyoda,Yuichiro Ueno,Naohiro Yoshida","Analysis of seasonal variation of mass 47-CO2 in urban air","4th International Symposium on Isotopomers","4th International Symposium on Isotopomers proceedings","ISI2008 Science Committee",,,"pp. 141-142",2008,Oct.
"Mikhail Vasiliev,Prosenjit Ghosh,Keita Yamada,Naohiro Yoshida","Clumped isotope analysis for paleothermometer by delta-XP at Tokyo Tech","4th International Symposium on Isotopomers","4th International Symposium on Isotopomers proceedings","ISI2008 Science Committee",,,"pp. 135-140",2008,Oct.
"Ryota Hattori,Keita Yamada,Naohiro Yoshida","An improved method for measurement of isotope ratio of ethanol in various samples, including alcoholic and non-alcoholic beverages","4th International Symposium on Isotopomers","4th International Symposium on Isotopomers proceedings","ISI2008 Science Committee",,,"pp. 287-291",2008,Oct.
"今井翔,吉田 磨,河野恒平,豊田栄,藤井彩子,山田桂太,渡邉修一,吉田尚弘","北太平洋WOCE-P01・P03 におけるメタンの挙動","2008年度日本地球化学会第55回年会","日本地球化学会第55回年会講演要旨集","日本地球化学会",,,"p. 229",2008,Sept.
"服部祥平,山田桂太,豊田栄,鈴木有理,藤井彩子,吉田尚弘,河野里名,村山康樹","下水高度処理過程における溶存態メタンの安定同位体を用いた解析","日本地球化学会第55回年会","日本地球化学会第55回年会講演要旨集","日本地球化学会",,,"p. 154",2008,Sept.
"Ryota Hattori,Keita Yamada,Naohiro Yoshida","An improved method for measurement of isotope ratio of ethanol in various samples, including alcoholic and non-alcoholic beverages",,"Rapid Communications in Mass Spectrometry",,"Vol. 22",,"pp. 3410-3414",2008,
"Keita Yamada,Naohiro Yoshida,Giovanni Calderone,Claude Guillou","Determination of hydrogen, carbon and oxygen isotope ratios of ethanol in water at millimole levels.",,"Rapid communications in Mass Spectrometry",,"Vol. 21",,"p. 1431-1437",2007,Oct.
"K. Tsuji,S. Fujikawa,K. Yamada,N. Yoshida,K. Yamamoto,T. Kikugawa","Precise Measurement of the 13CH4/12CH4 Ratio of Diluted Methane Using a Near-Infrared Laser Absorption Spectrometer",,"Sensors and Actuators B: Chemical",,"Vol. 114","No. 1","pp. 326-333",2006,Mar.
"Keiko Ishida-Fujii,Shingo Goto,Ryu Uemura,Keita Yamada,Michikatsu Sato,Naohiro Yoshida","Botanical and Geographical Origin Identification of Industrial Ethanol by Stable Isotope Analyses of C, H, and O",,"Biosci. Biotechnol. Biochem",,"Vol. 69","No. 11","pp. 2193-2199",2005,
"Fumiko Nakagawa,Urumu Tsunogai,Daisuke D. Komatsu,Keita Yamada,Naohiro Yoshida,Jun Moriizumi,Koichiro Nagamine,Takao Iida,Yukimasa Ikebe","Automobile exhaust as a source of 13C- and D-enriched atmospheric methane in urban areas",,"Organic Geochemistry",,"Vol. 36",,"pp. 727-738",2005,
"Keita Yamada,Naohiro Yoshida,Fumiko Nakagawa,Gen Inoue","Source evaluation of atmospheric methane over western Siberia using double stable isotopic signatures",,"Organic Geochemistry",,"Vol. 36",,"pp. 717-726",2005,
"keita Yamada","An improvd method for measurement of the hydrogen isotope ratio of atmospheric methane and its application to a Japanese urban atmosphere",,"Atmospheric Environment",,"Vol. 37",,"pp. 1975-1982",2003,
"Keita Yamada,Misato Tanaka,Fumiko Nakagawa,Naohiro Yoshida","On-line measurement of intramolecular carbon isotope distribution of acetic acid by continuous-flow isotope ratio mass spectrometry",,"Rapid Communications in Mass Spectrometry",,"Vol. 16",,"pp. 1059-1064",2002,
"Yamada, K.,Tanaka, M.,Nakagawa, F.,Yoshida, N.","On-line measurement of intramolecular carbon isotope distribution of acetic acid by continuous-flow isotope ratio mass spectrometry",,"Rapid Communications in Mass Spectrometry",,"Vol. 16","No. 11","pp. 1059-1064",2002,
"keita Yamada","Measurements of the D/H ratio of CH4 by GC/TC/IRMS",,"1st International Symposium on Isotopomers, Extended Abstracts",,,,"pp. 41-42",2001,
"Keita Yamada,Yoko Ozaki,Fumiko Nakagawa,Naohiro Yoshida,Haruo Tsuruta,Shigeto Sudo,Claude Guillou,Giovanni Bidoglio","Measurements of the D/H ratios of CH4 by GC/TC/IRMS.",,"1st International Symposium on Isotopomers, Proceedings",,,,"pp. 112-115",2001,
"keita Yamada","Sources of 24-ethylcholest-5-en-3b-ol in Japan Sea sediments over the past 30,000 years inferred from its carbon isotopic composition",,"Organic Geochemistry",,"Vol. 32",,"pp. 259-269",2001,
"H. Naraoka,K. Yamada,R. Ishiwatari","Recent sedimentary hopanoids in the northwestern Pacific alongside the Japanese Islands-their concentrations and carbon isotopic compositions",,"Organic Geochemistry",,"Vol. 31",,"pp. 1023-1029",2000,
"K. Yamada,R. Ishiwatari","Carbon isotopic compositions of long-chain n-alkanes in the Japan Sea sediments: Implications for paleoenvironmental changes over the past 85 kyr.",,"Organic Geochemistry",,"Vol. 30",,"pp. 367-377",1999,
"Yamada, K.","Geochemical study of stable carbon isotopic compositions of individual hydrocarbons.",,"Researches in Organic Geochemistry",,"Vol. 14",,"pp. 3-5",1999,
"Ishiwatari, R.,Yamada, K.,Matsumoto, K.,Houtatsu, M.,Naraoka, H.","Organic molecular and carbon isotopic records of the Japan Sea over the past 30kyr.",,"Paleoceanography",,"Vol. 14",,"pp. 260-270",1999,
"Yamada, K.,Ishiwatari, R.,Matsumoto, K.,Naraoka, H.","d13C records of diploptene in the Japan Sea sediments over the past 25 kyr.",,"Geochemical Journal",,"Vol. 31",,"pp. 315-321",1997,
"山田桂太","現世堆積物中の個別炭化水素類の安定炭素同位体組成に関する地球化学的研究",,,,,,,1997,
"Ishiwatari, R.,Hirakawa, Y.,Uzaki, M.,Yamada, K.,Yada, T.","Organic geochemistry of the Japan Sea sediments-1. Bulk organic matter and hydrocarbon analyses of core KH-79-3, C-3 from the Oki ridge for paleoenvironment assessments.",,"Journal of Oceanography",,"Vol. 50",,"pp. 179-195",1994,
"Naraoka, H.,Yamada, K.,Ishiwatari, R.","Stable carbon isotope measurement of individual fatty acids using gas chromatography/isotope ratio monitoring mass spectrometry.",,"Journal of Mass Spectrometry Society of Japan",,"Vol. 42",,"pp. 315-323",1994,
"Ishiwatari, R.,Uzaki, M.,Yamada, K.","Carbon isotope composition of individual n-alkanes in recent sediments.",,"Organic Geochemistry",,"Vol. 21",,"pp. 801-808",1994,
"山田桂太,鵜崎実,今亮人,奈良岡浩,石渡良志","原油中個別長鎖ｎ-アルカンの安定炭素同位体分析のためのモレキュラーシーブ分離法の検討",,"質量分析",,"Vol. 42",,"pp. 237-246",1994,
"Uzaki, M.,Yamada, K.,Ishiwatari, R.","Carbon isotope evidence for oil-pollution in long chain normal alkanes in Tokyo Bay sediments.",,"Geochemical Journal",,"Vol. 27",,"pp. 385-389",1993,
"Ishiwatari, R.,Uzaki, M.,Yamada, K.,Ogura, K.","Organic matter records of environmental changes in Lake Baikal Sediments 1: Carbon isotopes, organic carbon and nitrogen.",,"International Project on Paleolimnology and Late Cenozoic Climate Newsletter",,"Vol. 6",,"pp. 80-88",1992,