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- Jan Kleint
Dr. Jan Kleint |
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Postdocs |
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Group: |
Organic Geochemistry |
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Phone: |
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Fax: |
+49 421 218-65715 |
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Email: |
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Room: |
MARUM I, 2530 |
Member of the HinrichsLab: https://www.marum.de/en/AG_Hinrichs.html
...and in joint projects with
- MPI-MM Bremen (Department of Symbiosis - Prof. N. Dubilier) and
- Leibniz Laboratory for Radiometric Dating and Stable Isotope Research (Christian-Albrechts-University of Kiel - Molecular Geobiology - Dr. F. Elling)
Curriculum Vitae
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Since |
Postdoctoral Fellow and Research Associate Method development of a novel in situ underwater mass spectrometer for measurements of various gases (such as H2, CO2, CH4 and H2S) in the oceanic water column and at hydrothermal vents |
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01/2020 |
Postdoctoral Fellow and Research Associate Method development of a novel in situ underwater mass spectrometer for measurements of various gases (such as H2, CO2, CH4 and H2S) in the oceanic water column and at hydrothermal vents |
| 01/2019 – 12/2019 |
Postdoctoral Fellow and Research Associate Method development of a novel en-route measuring system for the combined, continuous measurements of carbon dioxide (CO2) and methane (CH4) concentration and its stable carbon isotope values (δ13C-CO2 and δ13C-CH4) in ocean surface water onboard RV POLARSTERN |
| 10/2014 – 10/2018 |
Promotion (Dr. rer. nat) Title: „Methane Dynamics in Lakes” Supervisor: Prof. Dr. Margot Isenbeck-Schröter Method development of a novel measuring system for the continuous measurements of methane (CH4) concentration and its stable carbon isotope value (δ13C-CH4) in surface waters |
| 05/2014 – 12/2018 |
Research Associate |
| 10/2011 – 04/2014 |
Master Studies („Geowissenschaften”, M.Sc.) Title: „Entwicklung einer in situ-Methodik zur Bestimmung der Konzentration und δ13C-Isotopie von CH4 und CO2 in Wässern” (engl. Development of an in situ method for the determination of the concentration and δ13C-isotopic values of CH4 and CO2 in water) |
| 10/2008 – 08/2011 |
Bachelor Studies („Geowissenschaften”, B.Sc.) Title: „Arsenspezifizierung in Oberflächensedimenten der Nordsee“ (engl. Arsenic speciation in surface sediments of the North Sea) |
Grants and Stipends
| 10/2020 |
KlarText-Award for Science Communication of the Klaus Tschira Foundation (https://klartext-preis.de/preistraeger/dr-jan-hartmann/ - in german, only) (Funding amount: € 7,500) |
| 11/2019 |
Environmental Award of the Viktor and Sigrid Dulger Foundation (Funding amount: € 10,000) |
| 11/2012 |
Deutschlandstipendium |
Research Cruises and Sampling Campaigns
| 02/2022 |
RV HEINCKE HE591 Equipment tests of in situ mass spectrometers |
| 05/2019 – 06/2019 |
RV POLARSTERN PS120 Continuous in-situ measurements of carbon dioxide (CO2) and methane (CH4) concentration and its stable carbon isotope values (δ13C-CO2 and δ13C-CH4) in ocean surface water |
| 04/2019 |
RV LUDWIG PRANDTL „MOSES“ Continuous in-situ measurements of carbon dioxide (CO2) and methane (CH4) concentration and its stable carbon isotope values (δ13C-CO2 and δ13C-CH4) in surface water |
| 12/2016 – 01/2017 |
RV SONNE SO253 „HYDROTHERMADEC“ Fluid geochemistry (ROV QUEST, CTD, trace metal clean rosette, in-situ pumps) |
| 10/2016 – 11/2016 |
RV HEINCKE HE475 Porewater and sediment geochemistry (IMGAM-AUV, MUC) |
| 05/2015 – 06/2015 |
RV SONNE SO240 „FLUM“ Porewater and sediment geochemistry (gravity and piston corer, MUC) |
| 07/2011 |
RC UTHÖRN Porewater and sediment geochemistry (gravity corer, MUC) |
| 09/2010 |
RV HEINCKE HE337 Porewater and sediment geochemistry (gravity corer, MUC) |
Sampling Campaigns
| 05/2017 – 02/2019 |
Lake Willersinnweiher, Ludwigshafen am Rhein, Germany Quarterly water column and sediment sampling of different redox species as well as CH4 concentration and its stable carbon isotopic composition |
| 08/2017 |
Lake Erken, Uppsala, Sweden Continuous in-situ measurements and depth profiles of CH4 concentration and its isotopic composition |
| 07/2017 |
Lake Stechlin, Lake Lab, Berlin, Germany Continuous in-situ measurements and depth profiles of CH4 concentration and its isotopic composition |
| 08/2016 |
Eiffel, Germany Measurements of CH4 concentration and its isotopic composition in an ant hill as well as in the surrounding atmosphere |
| 07/2015 & 08/2015 |
Lake Stechlin, Lake Lab, Berlin, Germany Continuous in-situ measurements and depth profiles of CH4 concentration and its isotopic composition |
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01-03/2012 |
Carlini (former Jubany, King-George-Island, Antarctica) Sampling of sediments (pore water and solid phase), analysis of different redox species and work in a clean lab |
Publications in Peer-Reviewed Journals
ORCID-iD: https://orcid.org/0000-0002-7325-2028
Kleint, J.F., Wellach, Y., Schroll, M., Keppler, F., and Isenbeck-Schröter, M. (2021) The impact of seasonal sulfate–methane transition zones on methane cycling in a sulfate‐enriched freshwater environment. Limnol Oceanogr.https://doi.org/10.1002/lno.11754
Hartmann, J.F., Günthel, M., Klintzsch, T., Kirillin, G., Grossart, H.P., Keppler, F and Isenbeck-Schröter, M. (2020) High Spatiotemporal Dynamics of Methane Production and Emission in Oxic Surface Water. Environ. Sci. Technol. 2020, 54 (3), 1451–1463. https://doi.org/10.1021/acs.est.9b03182
Kleint, C.; Bach, W.; Diehl, A.; Fröhberg, N.; Garbe-Schönberg, D.; Hartmann, J. F.; de Ronde, C. E. J.; Sander, S. G.; Strauss, H.; Stucker, V. K.; Thal, J.; Zitoun, R.; Koschinsky, A. (2019) Geochemical Characterization of Highly Diverse Hydrothermal Fluids from Volcanic Vent Systems of the Kermadec Intraoceanic Arc. Chem. Geol. 528 (September), 119289. http://dx.doi.org/10.1016/j.chemgeo.2019.119289
Hartmann J.F., Gentz, T., Schiller, A., Greule, M., Grossart, H.P., Ionescu, D., Keppler, F., Martinez-Cruz, K., Sepulveda-Jauregui, A., and Isenbeck-Schröter M. (2018) A fast and sensitive method for the continuous in situ determination of dissolved methane and its δ13C-isotope ratio in surface waters. Limnol. Oceanogr. Methods (2018). https://doi.org/10.1002/lom3.10244
Henkel, S., Kasten, S., Hartmann, J. F., Silva-Busso, A., and Staubwasser, M. (2018) Iron cycling and stable Fe isotope fractionation in Antarctic shelf sediments, King George Island. Geochim. Cosmochim. Acta. 237, 320–338. https://doi.org/10.1016/j.gca.2018.06.042
Hartmann J.F., Gentz, T., Schiller, A., Greule, M., Grossart, H.P., Ionescu, D., Keppler, F., Martinez-Cruz, K., Sepulveda-Jauregui, A., and Isenbeck-Schröter M. (2017) Real Time Measurement of Concentration and δ13C-CH4 in Water. Procedia Earth Planet. Sci. 17: 460–463. doi: 10.1016/j.proeps.2016.12.116
Keppler, F., Schiller, A., Ehehalt, R., Greule, M., Hartmann J.F. and Polag, D. (2016) Stable isotope and high precision concentration measurements confirm that all humans produce and exhale methane. J. Breath Res. 10: 16003. https://doi.org/10.1088/1752-7155/10/1/016003
Conferences and Workshops
Hartmann, J.F., Günthel, M., Klintzsch, T., Kirillin, G., Grossart, H.P., Keppler, F and Isenbeck-Schröter, M.: High Spatio-Temporal Methane Dynamics in Surface Waters: Between in situ Production and Emission (Talk), Goldschmidt 2019, Barcelona, Spain.
Hartmann, J.F., Wellach, Y., Isenbeck-Schröter, M., and Keppler, F.: Coupled Sulfur and Carbon Cycling in Limnic Sediments of Lake Willersinnweiher (SW-Germany) (Poster), Goldschmidt 2019, Barcelona, Spain.
Hartmann, J.F., Krägefsky, S., Eschenröder, J., Gentz, T. and Isenbeck-Schröter, M.: Development of novel en-route measuring system for continuous measurements of pCO2 in the surface water (Poster), Goldschmidt 2019, Barcelona, Spain.
Hartmann, J.F., Wellach, Y., Isenbeck-Schröter, M., and Keppler, F.: Freisetzungs- und Umsatzprozesse des Methans in einem Grundwasser-gespeisten Baggersee (Poster); Grundwasser im Umfeld von Bergbau, Energie und urbanen Räumen, 26. Tagung der Fachsektion Hydrogeologie e. V. in der DGGV e.V.,2018, Bochum, Germany.
Henkel, S., Kasten, S., Hartmann, J.F. and Staubwasser, M.: Iron Cycling and Isotope Fractionation in Shelf Sediments of King George Island, Antarctica; Goldschmidt 2017, Paris, France.
Kasten, S., Versteegh, G., Koschinsky, A., Villinger, H., Dohrmann, I., Fronzek, J.,
Hartmann, J.F., Kleint, C., Preuss, I., Ritter, S. and Kuhn, T.: Widespread diffusion of oxygen from oceanic crust into overlying sediments in the NE Pacific Ocean - Early diagenetic consequences and significance for biogeochemical cycles (RV SONNE cruise SO240); Goldschmidt 2017, Paris, France.
Hartmann, J.F., Schiller, A., Gentz, T. et al: Real Time Measurement of Concentration and δ13C - CH4 in Water (Poster); 15th Water-Rock Interaction International Symposium 2016, Evora, Portugal.
Hartmann, J.F., Gentz, T., Al Najem, S., Freund, F., Scholz, C., and Isenbeck-Schröter, M.: Entwicklung einer in situ-Methodik zur Bestimmung der Konzentration und δ13C-Isotopie von CH4 und CO2 in Wässern (Poster); Jahrestagung der Arbeitsgemeinschaft Stabile Isotope e.V. 2015, Heidelberg, Germany.
Henkel, S., Kasten, S., Poulton, S. W., Hartmann, J. F. and Staubwasser, M.: Iron cycling in marine sediments - new insights from isotope analysis on sequentially extracted Fe fractions; AGU Fall Meeting 2014, San Francisco, USA.
Hartmann, J. F., Kasten, S., Krengel, T. and Isenbeck-Schröter, M.: Arsenic in surface sediments of a harbor sludge dumping site in the Helgoland Mud Area, North Sea (Poster); Goldschmidt 2013, Florence, Italy.
Workshops
„PCO2 measuring techniques”, (invited Talk) Alfred Wegener Institute (AWI) Bremerhaven, Germany, September 2017.
“Picarro – Fluxes and isotopic measurements of Greenhouse Gases”, UGT Freising, Germany, October 2014.
“TRACE – Deep-reservoir analysis of hydrogeothermal aquifers” (Poster) Heidelberg University, Heidelberg, Germany, June 2014.