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★ Welcome to Shohato's web site @ Tokyo Tech.

Hi, I, Shohei Hattori (an Assistant Professor, Tokyo Institute of Technology), am interested in material cycle (H, C, N, O, S etc.) analysis using stable isotopes and isotopomers. My current works are atmospheric chemistry using oxygen and sulfur mass-independent signatures. In particular, following topics are now target.

1. Atmospheric oxidative capacity revealed by triple oxygen isotopic compositions of oxy-anions (sulfate, nitrate), and multiple sulfur isotopes.
 - Aerosols collected by various environments
 - Ice core and snow (Grreenland, Antarctica)

2 Carbonyl sulfide isotopes and its application for the biogeochemical cycles.
 - Observations for tropospheric OCS
 - Laboratory experiments (microorganisms and its enzyme)

3. Nitrogen cycle in ecosystems
 - Triple oxygen isotope approach to elucidate nitrogen cycle in forest soil

Please contact directly to my e-mail, if you are interested in the topics. 

★ Address

Shohei Hattori, Dr. Sci. (Assistant Professor)

Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology

G1-17, Nagatuta-cho, Mirori-ku, Yokohama, 226-8502, Japan

E-mail: hattori.s.ab@@m.titech.ac.jp (please remove one @)

★ Latest Publications (20161024 update)

28. Noro, K., Hattori, S.*, Uemura, R., Fukui, K., Hirabayashi M., Kawamura K., Takenaka N., Yoshida, N.: Spatial variation of isotopic compositions of snowpack nitrate related to post-depositional processes in eastern Dronning Maud Land, East Antarctica, Geochemical Journal Express Letter, vol. 52, 2018 (in press).  (journal website)
NEW! 27. Iizuka, Y., Uemura, R., Fujita, K., Hattori, S., Seki, O., Miyamoto, C., Suzuki, T., Yoshida, N., Motoyama, H., Matoba, S.: A 60‐year record of atmospheric aerosol depositions preserved in a high‐accumulation dome ice core, southeast Greenland. J. Geophys. Res. Atmos. 10.1002/2017JD026733, 2018 (journal website

26.Geng, L., Savarino, J., Savarino, C., Caillon, N., Cartigny, P., Hattori, S., Ishino, S., Yoshida, N.: A simple and reliable method reducing sulfate to sulfide for multiple sulfur isotope analysis. Rapid Communications in Mass Spectrometry. 2017 (journal website)
24.  Maeda, K., Toyoda, S., Philippot, L., Hattori, S., Nakajima, K., Ito, Y., Yoshida, N.: Relative contribution of nirK- and nirS- bacterial denitrifiers as well as fungal denitrifiers to nitrous oxide production from dairy manure compost. Environ. Sci. Technol., 51 (24), pp 14083–14091, 2017(journal website)
23. Ogawa, T., Hattori, S., Kamezaki, K., Kato, H., Yoshida, N., Katayama, Y. *: Isotopic Fractionation of Sulfur in Carbonyl Sulfide by Carbonyl Sulfide Hydrolase of Thiobacillus thioparus THI115, Microbes and EnvironmentsVol. 32, 4, 367-375, 2017  (journal website)
22. Ishino, S., Hattori, S.Savarino, J., Jourdain, B., Preunkert, S., Legrand, M., Caillon, N., Barbero, A., Kuribayashi, K., Yoshida, N.: Seasonal variations of triple oxygen isotopic compositions of atmospheric sulfate, nitrate and ozone at Dumont d’Urville, coastal AntarcticaAtmos. Chem. Phys., 17, 3713-3727, 2017Highlight articles  (journal website
21.Hattori, S.*, Savarino, J., Kamezaki, K., Ishino, S., Dyckmans, J., Fujinawa, T., Caillon, N., Barbero, A., Mukotaka, A., Toyoda, S., Well, R., Yoshida, N.: Automated system measuring triple oxygen and nitrogen isotope ratios in nitrate using the bacterial method and N2O decomposition by microwave dischargeRapid Commun. Mass Spectrom.,  (accepted)  (journal website)
20Kamezaki, K.*, Hattori, S.*, Ogawa, T., Toyoda, S., Kato, H., Katayama, Y., Yoshida, N.,: Sulfur isotopic fractionation of carbonyl sulfide during degradation by soil bacteria, Environ. Sci. Technol., DOI: 10.1021/acs.est.5b05325, Just Accepted Manuscript., 2016. (journal website
19. Hattori, S.*, Ishino, S., Kamezaki, K., and Yoshida N.: Review of Stable Isotope Analysis for Atmospheric Sulfate and Its Related Species, Earozoru Kenkyu, , 31(1),  2016. (in press) [In Japanese with English abstract]

18. Maeda, K., Toyoda, S., Yano, M., Hattori, S., Fukasawa, M., Nakajima, K., and Yoshida, N.: Isotopically enriched ammonium shows high nitrogen turnover in the pile top zone of dairy manure compost, Biogeosciences, 13, 1341-1349, doi:10.5194/bg-13-1341-2016, 2016 (journal website)

17. Zou, Y., Hirono, Y., Yanai, Y., Hattori, S., Toyoda, S., Yoshida, N.: Rainwater, soil water, and soil nitrate effects on oxygen isotope ratios of nitrous oxide produced in a green tea (Camellia sinensis) field in Japan, Rapid Commun. Mass SpectromVolume 29, Issue 9, 891–900, 2015  (journal website)
16. Endo, Y., Danielache, S.O., Ueno, Y., Hattori, S., Johnson M. S., Yoshida., N., Kjaergaard H. G.: Photoabsorption cross-section measurements of 32S, 33S, 34S and 36S sulfur dioxide from 190 to 220 nm. J. Geophys. Res. Atmos.,  Accepted Article , D2430110.1002/2014JD021671 2015 (journal website)
15. Hattori, S.*, Toyoda, A., Toyoda, S., Ishino S., Ueno, Y., Yoshida, N.: Determination of the Sulfur Isotope Ratio in Carbonyl Sulfide using Gas Chromatography/Isotope Ratio Mass Spectrometry on Fragment Ions 32S+, 33S+, and 34S+ Analytical Chemistry, 87, 477−484, DOI: 10.1021/ac502704d, 2015 (journal website)

14. Kawagucci, S., Kobayashi, M., Hattori, S., Yamada, K., Ueno, Y., Takai, K., Yoshida, N.: Hydrogen isotope systematics among H2-H2O-CH4 during the growth of the hydrogenotrophic methanogen Methanothermobacter thermoautotrophicus strain ΔH Geochimica et Cosmochimica Acta, vol 142, 601-614, 2014 (journal website)
13. Zou, Y., Hirono, Y., Yanai, Y., Hattori, S., Toyoda, S., Yoshida, N.: Isotopomer analysis of nitrous oxide accumulated in soil cultivated with tea (Camellia sinensis) in Shizuoka, central Japan, Soil Biology and Biochemistry, Volume 77, October 2014, Pages 276-291, ISSN 0038-0717, http://dx.doi.org/10.1016/j.soilbio.2014.06.016. (journal website)

12. Hattori, S.*, Schmidt, J. A., Johnson, M. S., Danielache, S. O., Yamada, A., Ueno, Y., and Yoshida, N.*: SO2 photoexcitation mechanism links mass-independent sulfur isotopic fractionation in cryospheric sulfate to climate impacting volcanism, Proc. Natl. Acad. Sci. USA, vol.110 no. 44, 17656-17661, doi:10.1073/pnas.1213153110, 2013(journal website)
11. Schmidt, J. A., Johnson, M. S., Hattori, S., Yoshida, N., Nanbu, S., and Schinke, R.: OCS photolytic isotope effects from first principles: sulfur and carbon isotopes, temperature dependence and implications for the stratosphere, Atmos. Chem. Phys., 13, 1511-1520, doi:10.5194/acp-13-1511-2013, 2013. (journal website)
 Danielache, S., Hattori, S., Johnson, M.S., Ueno Y., Nanbu, S., Yoshida, N.: Photoabsorption cross-section measurements of 32S, 33S, 34S and 36S sulfur dioxide for the B1B1-X1A1 absorption band, J. Geophys. Res. Atmos.,  VOL. 117, D24301,doi:10.1029/2012JD017464, 2012 (journal website)

9. Nakagawa, M., Ueno, Y., Hattori, S., Umemura, M., Yagi, A., Takai, K., Koba K., Sasaki, Y., Makabe, A., Yoshida, N. Seasonal change in microbial sulfur cycling in monomictic Lake Fukami-ike, Japan, Limnol. Oceanogr., 57(4), 974-988, DOI: 10.4319/lo.2012.57.4.0974. 2012. (journal website)
8. Hattori, S.
*, Nashimoto, H., Kimura, H., Koba, K., Yamada, K., Shimizu, M., Watanabe, H., Yoh, M., Yoshida, N.: Hydrogen and carbon isotope fractionation by thermophilic hydrogenotrophic methanogens from a deep aquifer under coculture with fermenters. Geochem. J., 46, 3, 193-200, doi:10.2343/geochemj.1.0161, 2012 (journal website)
7. Enghoff, M. B., Bork, N., Hattori, S., Meusinger, C., Nakagawa, M., Pedersen, J. O. P., Danielache, S. O., Ueno, Y., Johnson, M. S., Yoshida, N., and Svensmark, H.: An isotope analysis of ionising radiation as a source of sulphuric acid, Atmos. Chem. Phys., 12, 5319-5327, doi:10.5194/acp-12-5319-2012, 2012. (journal website)
6. Hattori, S.
*, Schmidt J., Mahler D., Danielache, S., Johnson M. S., Yoshida N.: Isotope Effect in the Carbonyl Sulfide Reaction with O(3P), J. Phys. Chem. A, 116, 3521-3526, doi: 10.1021/jp2120884, 2012. (journal website)
5. Schmidt, J. A., Johnson, M. S., Jung, Y., Danielache, S. O., Hattori, S., Yoshida, N. Predictions of the sulfur and carbon kinetic isotope effects in the OH + OCS reaction, Chem. Phys. Lett., 531, 64-69, DOI:10.1016/j.cplett.2012.02.049, 2012. (journal website)

4. Hattori, S.
*, Danielache, S. O., Johnson, M. S., Schmidt, J. A., Kjaergaard, H. G., Toyoda, S., Ueno, Y., and Yoshida, N.: Ultraviolet absorption cross sections of carbonyl sulfide isotopologues OC32S, OC33S, OC34S and O13CS: isotopic fractionation in photolysis and atmospheric implications, Atmos. Chem. Phys., 11, 10293-10303, doi:10.5194/acp-11-10293-2011, 2011. (journal website)
3. Toyoda, S., Suzuki, Y., Hattori, S., Yamada, K., Fujii, A., Yoshida, N., Kouno, R., Murayama, K., Shiomi, H. Isotopomer Analysis of Production and Consumption Mechanisms of N2O and CH4 in an Advanced Wastewater Treatment System Environ. Sci. Tech., 45 (3), 917-922, doi: 10.1021/es102985u, 2011. (journal website)

2. Kimura, H., Nashimoto, H., Shimizu, M., Hattori, S., Yamada, K., Koba, K., Yoshida, N., Kato, K.: Microbial methane production in deep aquifer associated with the accretionary prism in Southwest Japan. The ISME Journal, 4, 531-541, doi:10.1038/ismej.2009.132, 2010. (journal website)
1. Kimura, H., Mori, K., Nashimoto, H., Hattori, S., Yamada, K., Koba, K., Yoshida, N., Kato, K.: Biomass production and energy source of thermophiles in a Japanese alkaline geothermal pool. Environ. Microbiol., 12, 480-489, doi: 10.1111/j.1462-2920.2009.02089.x., 2010. (journal website)

★ Award
 ・ Young Scientist Award, Geochemical Society of Japan, 2015.