heiBIB: Keppler, Frank

Keppler, Frank Prof. Dr.Universität HeidelbergHeidelberg

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Publications in heiBIB

Cox, Terry: Isotopic analysis (δ13C and δ2H) of lignin methoxy groups in forest soils to identify and quantify lignin sources / Terry Cox, Anna Wieland, Markus Greule, Frank Keppler, Annika Einbock, Christine Alewell, 1 November 2024. - 10 S. : Illustrationen
In: The science of the total environment, ISSN 1879-1026. 949(2024) vom: Nov., Artikel-ID 175025, Seite 1-10
DOI: 10.1016/j.scitotenv.2024.175025
Wieland, Anna: Tree-ring stable isotopes in cellulose and lignin methoxy groups reveal different age-related behaviour / Anna Wieland, Philipp Römer, Max Torbenson, Markus Greule, Otmar Urban, Josef Čáslavský, Natálie Per… , 30 May 2024. - 11 S. : Illustrationen
In: Quaternary international, ISSN 1040-6182. 693(2024) vom: Mai, Seite 38-48
DOI: 10.1016/j.quaint.2024.02.004
Schmitt, Fabian: High index reflective glass beads in modern river sediments as a potential marker for the Anthropocene / Fabian Schmitt, Axel K. Schmitt, Christian Scholz and Frank Keppler, Apr 22, 2024. - 10 S.
In: Newsletters on stratigraphy, ISSN 2363-6122. 57(2024), 2 vom: Apr., Seite 225-234
DOI: 10.1127/nos/2024/0816
Cox, Terry: Using stable carbon isotopes of lignin-derived methoxy to improve historical apportionments of particulate organic matter and sediment sources incorporating multiple Suess corrections / Terry Cox, J. Patrick Laceby, Markus Greule, Frank Keppler, Christine Alewell, 13 March 2024. - 21 S. : Illustrationen
In: Journal of soils and sediments, ISSN 1614-7480. 24(2024), 5, Seite 2159-2179
DOI: 10.1007/s11368-024-03765-2
Greule, Markus: Comparison of carbon isotope ratio measurement of the vanillin methoxy group by gc-irms and 13c-qnmr / Markus Greule, Phuong Mai Le, Juris Meija, Zoltán Mester, and Frank Keppler, 2024. - 6 S. : Illustrationen, Diagramme
In: Journal of the American Society for Mass Spectrometry, ISSN 1879-1123. 35(2024), 3, Seite 100-105
DOI: 10.1021/jasms.3c00327
Sapper, Sarah Elise: Methane emissions from subglacial meltwater of three alpine glaciers in yukon, canada / Sarah Elise Sapper, Christian Juncher Jorgensen, Moritz Schroll, Frank Keppler and Jesper Riis Chris… , 31 December 2023. - 13 S. : Illustrationen
In: Arctic, antarctic, and alpine research, ISSN 1938-4246. 55(2023), 1, Artikel-ID 2284456, Seite 1-13
DOI: 10.1080/15230430.2023.2284456
Hädeler, Jonas: Natural abiotic iron-oxido-mediated formation of C1 and C2 compounds from environmentally important methyl-substituted substrates / Jonas Hadeler, Gunasekaran Velmurugan, Rebekka Lauer, Rejith Radhamani, Frank Keppler, and Peter Com… , November 6, 2023. - 13 S. : Illustrationen
In: Journal of the American Chemical Society, ISSN 1520-5126. 145(2023), 45 vom: Nov., Seite 24590-24602
DOI: 10.1021/jacs.3c06709
Ernst, Leonard: Methane formation driven by light and heat prior to the origin of life and beyond / Leonard Ernst, Uladzimir Barayeu, Jonas Hädeler, Tobias P. Dick, Judith M. Klatt, Frank Keppler, Joh… , 01 August 2023. - 10 S.
In: Nature Communications, ISSN 2041-1723. 14(2023), Artikel-ID 4364, Seite 1-10
DOI: 10.1038/s41467-023-39917-0
Schroll, Moritz: Methane accumulation and its potential precursor compounds in the oxic surface water layer of two contrasting stratified lakes / Moritz Schroll, Liu Liu, Teresa Einzmann, Frank Keppler, Hans-Peter Grossart, 10 December 2023. - 14 S. : Illustrationen
In: The science of the total environment, ISSN 1879-1026. 903(2023), Artikel-ID 166205, Seite 1-14
DOI: 10.1016/j.scitotenv.2023.166205
Lu, Qiangqiang: Altitude-specific differences in tree-ring δ2H records of wood lignin methoxy in the Qinling mountains, central China / Qiangqiang Lu, Xiaohong Liu, Kerstin Treydte, Markus Greule, Anna Wieland, Jinzhao Liu, Liangju Zhao… , 15 January 2023. - 14 S. : Illustrationen, Diagramme
In: Quaternary science reviews, ISSN 0277-3791. 300(2023), Artikel-ID 107895, Seite 1-14
DOI: 10.1016/j.quascirev.2022.107895
Schorndorf, Nils: Mid- to late Holocene sea-level rise recorded in Hells Bells 234U/238U ratio and geochemical composition / Nils Schorndorf, Norbert Frank, Simon M. Ritter, Sophie F. Warken, Christian Scholz, Frank Keppler, … , 2023. - 11 S. : Illustrationen
In: Scientific reports, ISSN 2045-2322. 13(2023), Artikel-ID 10011, Seite 1-11
DOI: 10.1038/s41598-023-36777-y
Reinig, Frederick: Reply to: Possible magmatic CO2 influence on the Laacher See eruption date / Frederick Reinig, Lukas Wacker, Olaf Jöris, Clive Oppenheimer, Giulia Guidobaldi, Daniel Nievergelt,… , 2023. - 6 S. : Illustrationen
In: Nature, ISSN 1476-4687. 619(2023), 7968, Seite E3-E8
DOI: 10.1038/s41586-023-05966-0
Polag, Daniela: Effect of immune responses on breath methane dynamics / Daniela Polag, Frank Keppler, 2023. - ?
In: Journal of breath research, ISSN 1752-7163. 17(2023), 4, Artikel-ID 046005, Seite ?
DOI: 10.1088/1752-7163/ace9f2
Klintzsch, Thomas: Stable carbon isotope signature of methane released from phytoplankton / T. Klintzsch, H. Geisinger, A. Wieland, G. Langer, G. Nehrke, M. Bizic, M. Greule, K. Lenhart, C. Bo… , 28 June 2023. - 12 S. : Illustrationen
In: Geophysical research letters, ISSN 1944-8007. 50(2023), 12 vom: Juni, Artikel-ID e2023GL103317, Seite 1-12
DOI: 10.1029/2023GL103317
Hartmann, Simon Christoph: Triple-element stable isotope analysis of chloromethane emitted by royal fern and degraded by club moss / S. Christoph Hartmann, Frank Keppler, Markus Greule, Rebekka Lauer, and Axel Horst, May 2023. - 15 S.
In: Journal of geophysical research, ISSN 2169-8961. 128(2023), 5, Artikel-ID e2022JG007256, Seite 1-15
DOI: 10.1029/2022JG007256
Meier, Thomas: Vorwort / Thomas Meier, Frank Keppler, Ute Mager, Ulrich Platt, Friederike Reents. -
Heidelberg: Universitätsbibliothek Heidelberg, 24 Jun. 2023. - 1 Online-Ressource
DOI: 10.11588/heidok.00031076
Klintzsch, Thomas: Stable carbon isotope signature of methane released from phytoplankton [research data] / Thomas Klintzsch, Hannah Geißinger, Anna Wieland, Gerald Langer, Gernot Nehrke, Mina Bizic, Markus G… . -
Heidelberg: Universität, 2023-06-07. - 1 Online-Ressource (1 File)
DOI: 10.11588/data/YYLEKU
Kirchhoff, Thomas: Umweltwissenschaften / von Thomas Kirchhoff, Frank Keppler, Thomas Meier, Jacqueline Lorenzen und Tanja Granzow. -
Heidelberg: Universitätsbibliothek Heidelberg, 2022. - 1 Online-Ressource (48 Seiten)
DOI: 10.11588/heidok.00032129
Lu, Qiangqiang: Tree-ring δ2H records of lignin methoxy indicate spring temperature changes since 20th century in the Qinling Mountains, China / Qiangqiang Lu, Xiaohong Liu, Liangcheng Tan, Frank Keppler, Kerstin Treydte, Anna Wieland, Lingnan Z… , 17 October 2022. - 11 S.
In: Dendrochronologia, ISSN 1612-0051. 76(2022), Artikel-ID 126020, Seite 1-11
DOI: 10.1016/j.dendro.2022.126020
Schroll, Moritz: Making plant methane formation visible : insights from application of 13C-labeled dimethyl sulfoxide / Moritz Schroll, Katharina Lenhart, Steffen Greiner, Frank Keppler, 2022. - 14 S.
In: Plant-environment interactions, ISSN 2575-6265. 3(2022), 3, Seite 104-117
DOI: 10.1002/pei3.10076
Einzmann, Teresa: Application of concentration and 2-dimensional stable isotope measurements of methane to constrain sources and sinks in a seasonally stratified freshwater lake / Teresa Einzmann, Moritz Schroll, Jan F. Kleint, Markus Greule and Frank Keppler, 03 November 2022. - 22 S.
In: Frontiers in Environmental Science, ISSN 2296-665X. 10(2022), Artikel-ID 865862, Seite 1-22
DOI: 10.3389/fenvs.2022.865862
Einzmann, Teresa: Application of concentration and 2-dimensional stable isotope measurements of methane to constrain sources and sinks in a seasonally stratified freshwater lake [data] / Teresa Einzmann, Moritz Schroll, Jan Frederik Kleint, Markus Greule, Frank Keppler. -
Heidelberg: Universität, 2022-11-04. - 1 Online-Ressource (1 File)
DOI: 10.11588/data/KLFDVF
Wieland, Anna: Climate signals in stable carbon and hydrogen isotopes of lignin methoxy groups from southern German beech trees / Anna Wieland, Markus Greule, Philipp Roemer, Jan Esper, and Frank Keppler, 15 August 2022. - 18 S.
In: Climate of the past, ISSN 1814-9332. 18(2022), 8 vom: Aug., Seite 1849-1866
DOI: 10.5194/cp-18-1849-2022
Wieland, Anna: Climate signals in stable carbon and hydrogen isotopes of lignin methoxy groups from southern German beech trees [data] / Anna Wieland, Markus Greule, Philipp Roemer, Jan Esper, Frank Keppler. -
Heidelberg: Universität, 2022-08-09. - 1 Online-Ressource (1 File)
DOI: 10.11588/data/ZCMVUY
Schlaudt, Oliver: Anthropozän / Oliver Schlaudt, Olaf Bubenzer, Hans Gebhardt, Frank Keppler, Jacqueline Lorenzen, Friederike Reents. -
Heidelberg: Universitätsbibliothek, 2022. - 1 Online-Ressource (42 Seiten)
DOI: 10.11588/heidok.00031286
Jungmann, Maximilian: Zooming-in for climate action : hyperlocal greenhouse gas data for mitigation action? / M. Jungmann, S.N. Vardag, F. Kutzner, F. Keppler, M. Schmidt, N. Aeschbach, U. Gerhard, A. Zipf, S. … , 08 April 2022. - 8 S.
In: Climate action, ISSN 2731-3263. 1(2022), Artikel-ID 8, Seite 1-8
DOI: 10.1007/s44168-022-00007-4
Schroll, Moritz: Making plant methane formation visible - insights from application of 13C-labelled dimethyl sulfoxide [research data] / Moritz Schroll, Katharina Lenhart, Steffen Greiner, Frank Keppler. -
Heidelberg: Universität, 2022-04-25. - 1 Online-Ressource (1 File)
DOI: 10.11588/data/VJFIBD
Porter, Trevor J.: Canadian arctic Neogene temperatures reconstructed from hydrogen isotopes of lignin-methoxy groups from sub-fossil wood / Trevor J. Porter, Tobias Anhäuser, Jochen Halfar, Frank Keppler, Adam Z. Csank, and Christopher J. W… , 19 January 2022. - 16 S.
In: Paleoceanography and paleoclimatology, ISSN 2572-4525. 37(2022), 2, Artikel-ID e2021PA004345, Seite 1-16
DOI: 10.1029/2021PA004345
Ernst, Leonard: Methane formation driven by reactive oxygen species across all living organisms / Leonard Ernst, Benedikt Steinfeld, Uladzimir Barayeu, Thomas Klintzsch, Markus Kurth, Dirk Grimm, To… , 09 March 2022. - 6 S.
In: Nature, ISSN 1476-4687. 603(2022), 7901, Seite 482-487
DOI: 10.1038/s41586-022-04511-9
Keppler, Frank: Geowissenschaften / von Frank Keppler, Axel Schmitt und Mario Trieloff. -
Heidelberg: Universitätsbibliothek Heidelberg, 26. Jan 2022. - 1 Online-Ressource (22 Seiten)
Wieland, Anna: Climate signals in stable carbon and hydrogen isotopes of lignin methoxy groups from southern German beech trees / Anna Wieland, Markus Greule, Philipp Roemer, Jan Esper, and Frank Keppler, 20 October 2021. - 26 S.
In: Climate of the past discussions, ISSN 1814-9359. (2021), Seite 1-26
DOI: 10.5194/cp-2021-135
Kröber, Eileen: 13C-chloromethane incubations provide evidence for novel bacterial chloromethane degraders in a living tree fern / Eileen Kröber, Sonja Wende, Saranya Kanukollu, Caroline Buchen-Tschiskale, Ludovic Besaury, Frank Ke… , 14 June 2021. - 16 S.
In: Environmental microbiology, ISSN 1462-2920. 23(2021), 8, Seite 4450-4465
DOI: 10.1111/1462-2920.15638
Keppler, Frank: A surprise from the deep : isotope patterns of methoxyl groups reveal the origin and production potential of methane from coal / by Frank Keppler, 12 November 2021. - 2 S.
In: Science. 374(2021), 6569, Seite 821-822
DOI: 10.1126/science.abm6027
Greule, Markus: Measurements and applications of δ2H values of wood lignin methoxy groups for paleoclimatic studies / Markus Greule, Anna Wieland, Frank Keppler, 14 August 2021. - 9 S.
In: Quaternary science reviews, ISSN 0277-3791. 268(2021) vom: Aug., Artikel-ID 107107, Seite 1-9
DOI: 10.1016/j.quascirev.2021.107107
Kleint, Jan F.: The impact of seasonal sulfate-methane transition zones on methane cycling in a sulfate-enriched freshwater environment / Jan F. Kleint, Yannic Wellach, Moritz Schroll, Frank Keppler, Margot Isenbeck-Schröter, 07 April 2021. - 19 S. : Diagramme, Karten
In: Limnology and oceanography, ISSN 1939-5590. 66(2021), 6, Seite 2290-2308
DOI: 10.1002/lno.11754
Jakob, Kim: Stable biological production in the Eastern Equatorial Pacific Across the Plio-Pleistocene transition (∼3.35-2.0 Ma) / Kim A. Jakob, S. Ling Ho, A. Nele Meckler, Jörg Pross, Jens Fiebig, Frank Keppler, and Oliver Friedr… , 12 March 2021. - 16 S.
In: Paleoceanography and paleoclimatology, ISSN 2572-4525. 36(2021), 4 vom: Apr., Artikel-ID e2020PA003965, Seite 1-16
DOI: 10.1029/2020PA003965
Wang, Yabo: Temperature signal recorded in δ2H and δ13C values of wood lignin methoxyl groups from a permafrost forest in northeastern China / Yabo Wang, Xiaohong Liu, Tobias Anhäuser, Qiangqiang Lu, Xiaomin Zeng, Qiuliang Zhang, Keyi Wang, Li… , 8 April 2020
In: The science of the total environment, ISSN 1879-1026. 727(2020) vom: Juli, Artikel-ID 138558, Seite 1-10
DOI: 10.1016/j.scitotenv.2020.138558
Klintzsch, Thomas: Effects of temperature and light on methane production of widespread marine phytoplankton [dataset] / Thomas Klintzsch, Frank Keppler. -
Heidelberg: Universität, 2020-08-20. - 1 Online-Ressource (1 File)
DOI: 10.11588/data/AGKWSG
Lu, Qiangqiang: Tree-ring lignin proxies in Larix gmelinii forest growing in a permafrost area of northeastern China : temporal variation and potential for climate reconstructions / Qiangqiang Lu, Xiaohong Liu, Tobias Anhäuser, Frank Keppler, Yabo Wang, Xiaomin Zeng, Qiuliang Zhang… , 31 July 2020. - 11 S.
In: Ecological indicators, ISSN 1872-7034. 118(2020) Artikel-Nummer 106750, 11 Seiten
DOI: 10.1016/j.ecolind.2020.106750
Klintzsch, Thomas: Effects of temperature and light on methane production of widespread marine phytoplankton / T. Klintzsch, G. Langer, A. Wieland, H. Geisinger, K. Lenhart, G. Nehrke, and F. Keppler, 25 August 2020. - 16 S.
In: Journal of geophysical research, ISSN 2169-8961. 125(2020,9) Artikel-Nummer e2020JG005793, 16 Seiten
DOI: 10.1029/2020JG005793
Schroll, Moritz: The stable carbon isotope signature of methane produced by saprotrophic fungi / Moritz Schroll, Frank Keppler, Markus Greule, Christian Eckhardt, Holger Zorn, and Katharina Lenhart, 31 July 2020. - 11 S.
In: Biogeosciences, ISSN 1726-4189. 17(2020), 14, Seite 3891-3901
DOI: 10.5194/bg-17-3891-2020
Schroll, Moritz: The stable carbon isotope signature of methane produced by saprotrophic fungi / Moritz Schroll, Frank Keppler, Markus Greule, Christian Eckhardt, Holger Zorn, Katharina Lenhart, 2 April 2020. - 21 S.
In: Biogeosciences discussions, ISSN 1810-6285. (2020) Preprint, Seite 1-21, 21 Seiten
DOI: 10.5194/bg-2020-108
Schroll, Moritz: The stable carbon isotope signature of methane produced by saprotrophic fungi [dataset] / Moritz Schroll, Frank Keppler, Markus Greule, Christian Eckhardt, Holger Zorn, Katharina Lenhart. -
Heidelberg: Universität, 2020-06-26. - 1 Online-Ressource (1 File)
DOI: 10.11588/data/DQYPMC
Anhäuser, Tobias: Tree-ring [delte]2H values from lignin methoxyl groups indicate sensitivity to European-scale temperature changes / T. Anhäuser, Birgit Sehls, Werner Thomas, Claudia Hartl, Markus Greule, Denis Scholz, Jan Esper, Fra… , 19 February 2020
In: Palaeogeography, palaeoclimatology, palaeoecology, ISSN 0031-0182. 546(2020) Artikel-Nummer 109665, 14 Seiten
DOI: 10.1016/j.palaeo.2020.109665
Keppler, Frank: Sources and sinks of chloromethane in a salt marsh ecosystem : constraints from concentration and stable isotope measurements of laboratory incubation experiments / Frank Keppler, Amelie Ninja Röhling, Nicole Jaeger, Moritz Schroll, Simon Christoph Hartmann and Mar… , 12 February 2020. - 15 S.
In: Environmental science, ISSN 2050-7895. 22(2020), 3, Seite 627-641
DOI: 10.1039/C9EM00540D
Keppler, Frank: Chlorine isotope fractionation of the major chloromethane degradation processes in the environment / Frank Keppler, Jaime D. Barnes, Axel Horst, Enno Bahlmann, Jing Luo, Thierry Nadalig, Markus Greule,… , 4 February 2020. - 12 S. : Illustrationen
In: Environmental science & technology letters, ISSN 2328-8930. 54(2020), 3, Seite 1634-1645
DOI: 10.1021/acs.est.9b06139
Kleint, Jan F.: High spatiotemporal dynamics of methane production and emission in oxic surface water / Jan F. Hartmann, Marco Günthel, Thomas Klintzsch, Georgiy Kirillin, Hans-Peter Grossart, Frank Keppl… , January 7, 2020. - 13 S. : Illustrationen
In: Environmental science & technology, ISSN 1520-5851. 54(2020), 3, Seite 1451-1463
DOI: 10.1021/acs.est.9b03182
Bižić, Mina: Aquatic and terrestrial cyanobacteria produce methane / M. Bižić, T. Klintzsch, D. Ionescu, M.Y. Hindiyeh, M. Günthel, A.M. Muro-Pastor, W. Eckert, T. Urich… , 15 Jan 2020. - 10 S.
In: Science advances, ISSN 2375-2548. 6(2020,3) Artikel-Nummer eaax5343, 10 Seiten
DOI: 10.1126/sciadv.aax5343
Greule, Markus: Three wood isotopic reference materials for [delta]2H and [delta]13C measurements of plant methoxy groups / Markus Greule, Heiko Moossen, Max K. Lloyd, Heike Geilmann, Willi A. Brand, John M. Eiler, Haiping Q… , [2020]. - 11 S. : Illustrationen
In: Chemical geology, ISSN 1872-6836. 533(2020) Artikel-Nummer 119428, Seite 1-11
DOI: 10.1016/j.chemgeo.2019.119428
Bubenzer, Olaf: Der Mensch als geologische Kraft : Das Zeitalter des Anthropozäns / Olaf Bubenzer, Hans Gebhardt & Frank Keppler, 2019-12-16. - 10 S.
In: Ruperto Carola, ISSN 0035-998X. 15(2019), Seite 24-33
DOI: 10.17885/heiup.ruca.2019.15.24092
Boros, Mihály: Methane production and bioactivity : a link to oxido-reductive stress / Mihály Boros and Frank Keppler, 27 September 2019. - 8 S.
In: Frontiers in physiology, ISSN 1664-042X. 10(2019) Artikel-Nummer 1244, 8 Seiten
DOI: 10.3389/fphys.2019.01244
Klintzsch, Thomas: Methane production by three widespread marine phytoplankton species : release rates, precursor compounds, and potential relevance for the environment / Thomas Klintzsch, Gerald Langer, Gernot Nehrke, Anna Wieland, Katharina Lenhart, and Frank Keppler, 28 Oct 2019. - 16 S.
In: Biogeosciences, ISSN 1726-4189. 16(2019), 20, Seite 4129-4144
DOI: 10.5194/bg-16-4129-2019
Klintzsch, Thomas: Methane production by three widespread marine phytoplankton species : release rates, precursor compounds, and potential relevance for the environment [dataset] / Thomas Klintzsch, Frank Keppler. -
Heidelberg: Universität, 2019-10-24. - 1 Online-Ressource (1 File)
DOI: 10.11588/data/9N1LSR
Bringel, Françoise: Methylotrophs and methylotroph populations for chloromethane degradation / Françoise Bringel, Ludovic Besaury, Pierre Amato, Eileen Kröber, Steffen Kolb, Frank Keppler, Stépha… , 2019. - 24 S.
In: Current issues in molecular biology, ISSN 1467-3045. 33(2019), Seite 149-172
DOI: 10.21775/cimb.033.149
Liu, Jiangong: Simultaneous abiotic production of greenhouse gases (CO2, CH4, and N2O) in subtropical soils / Jiangong Liu, Simon Christoph Hartmann, Frank Keppler, Derrick Y.F. Lai, 10 Jul 2019. - 11 S.
In: Journal of geophysical research, ISSN 2169-8961. 124(2019), 7, Seite 1977-1987
DOI: 10.1029/2019JG005154
Polag, Daniela: Global methane emissions from the human body : past, present and future / Daniela Polag, Frank Keppler, 1 October 2019. - 9 S.
In: Atmospheric environment, ISSN 1878-2442. 214(2019) Artikel-Nummer 116823, 9 Seiten
DOI: 10.1016/j.atmosenv.2019.116823
Ritter, Simon M.: Subaqueous speleothems (Hells Bells) formed by the interplay of pelagic redoxcline biogeochemistry and specific hydraulic conditions in the El Zapote sinkhole, Yucatán Peninsula, Mexico / Simon Michael Ritter, Margot Isenbeck-Schröter, Christian Scholz, Frank Keppler, Johannes Gescher, L… , 04 Jun 2019. - 21 S.
In: Biogeosciences, ISSN 1726-4189. 16(2019), 11, Seite 2285-2305
DOI: 10.5194/bg-16-2285-2019
Bahlmann, Enno: Evidence for a major missing source in the global chloromethane budget from stable carbon isotopes / Enno Bahlmann, Frank Keppler, Julian Wittmer, Markus Greule, Heinz Friedrich Schöler, Richard Seifer… , 08 Feb 2019. - 17 S.
In: Atmospheric chemistry and physics, ISSN 1680-7324. 19(2019), 3, Seite 1703-1719
DOI: 10.5194/acp-19-1703-2019
Lenhart, Katharina: Nitrous oxide effluxes from plants as a potentially important source to the atmosphere / Katharina Lenhart, Thomas Behrendt, Steffen Greiner, Jörg Steinkamp, Reinhard Well, Anette Giesemann… , February 2019. - 11 S.
In: The new phytologist, ISSN 1469-8137. 221(2019), 3, Seite 1398-1408
DOI: 10.1111/nph.15455
Esper, Jan: Site-specific climatic signals in stable isotope records from Swedish pine forests / Jan Esper, Steffen Holzkämper, Ulf Büntgen, Bernd Schöne, Frank Keppler, Claudia Hartl, Scott St. Ge… , 23 February 2018. - 15 S.
In: Trees, ISSN 1432-2285. 32(2018), 3, Seite 855-869
DOI: 10.1007/s00468-018-1678-z
Jäger, Nicole: Chloromethane degradation in soils : a combined microbial and two-dimensional stable isotope approach / Nicole Jaeger, Ludovic Besaury, Eileen Kröber, Anne-Marie Delort, Markus Greule, Katharina Lenhart, … , March 8, 2018. - 9 S.
In: Journal of environmental quality, ISSN 1537-2537. 47(2018), 2, Seite 254-262
DOI: 10.2134/jeq2017.09.0358
May, Tobias: Methane oxidation in industrial biogas plants : insights in a novel methanotrophic environment evidenced by pmoA gene analyses and stable isotope labelling studies / Tobias May, Daniela Polag, Frank Keppler, Markus Greule, Liane Müller, Helmut König, 3 February 2018. - 8 S.
In: Journal of biotechnology, ISSN 1873-4863. 270(2018), Seite 77-84
DOI: 10.1016/j.jbiotec.2018.01.022
Keppler, Frank: Mass spectrometric measurement of hydrogen isotope fractionation for the reactions of chloromethane with OH and Cl / Frank Keppler, Enno Bahlmann, Markus Greule, Heinz Friedrich Schöler, Julian Wittmer, Cornelius Zetz… , 09 May 2018. - 11 S.
In: Atmospheric chemistry and physics, ISSN 1680-7324. 18(2018), 9, Seite 6625-6635
DOI: 10.5194/acp-18-6625-2018
Kleint, Jan F.: A fast and sensitive method for the continuous in situ determination of dissolved methane and its [delta]13C-isotope ratio in surface waters / Jan F. Hartmann, Torben Gentz, Amanda Schiller, Markus Greule, Hans-Peter Grossart, Danny Ionescu, F… , 27 April 2018. - 13 S.
In: Limnology and oceanography, ISSN 1541-5856. 16(2018), 5, Seite 273-285
DOI: 10.1002/lom3.10244
Jäger, Nicole: Chloromethane formation and degradation in the fern phyllosphere / Nicole Jaeger, Ludovic Besaury, Amelie Ninja Röhling, Fabien Koch, Anne-Marie Delort, Cyrielle Gasc,… , 18 April 2018. - 10 S.
In: The science of the total environment, ISSN 1879-1026. 634(2018), Seite 1278-1287
DOI: 10.1016/j.scitotenv.2018.03.316
Anhäuser, Tobias: Earliest Eocene cold period and polar amplification : insights from [delta]2H values of lignin methoxyl groups of mummified wood / Tobias Anhäuser, Benjamin A. Hook, Jochen Halfar, Markus Greule, Frank Keppler, 15 June 2018. - 11 S.
In: Palaeogeography, palaeoclimatology, palaeoecology, ISSN 0031-0182. 505(2018), Seite 326-336
DOI: 10.1016/j.palaeo.2018.05.049
Schulze-Makuch, Dirk: Transitory microbial habitat in the hyperarid Atacama desert / Dirk Schulze-Makuch, Dirk Wagner, Samuel P. Kounaves, Kai Mangelsdorf, Kevin G. Devine, Jean-Pierre … , February 26, 2018. - 6 S.
In: Proceedings of the National Academy of Sciences of the United States of America, ISSN 1091-6490. 115(2018), 11, Seite 2670-2675
DOI: 10.1073/pnas.1714341115
Comba, Peter: Iron catalyzed demethylation of acetic acid / Peter Comba, Dieter Faltermeier, Sascha Gieger, Frank Keppler, Heinz Friedrich Schöler & Moritz Schr… , 17 Oct 2018. - 11 S.
In: Journal of coordination chemistry, ISSN 1029-0389. 71(2018), 11/3, Seite 1704-1714
DOI: 10.1080/00958972.2018.1490414
Greule, Markus: Methyl sulfates as methoxy isotopic reference materials for [delta]13C and [delta]2H measurements / Markus Greule, Heiko Moossen, Heike Geilmann, Willi A. Brand, Frank Keppler, 2019. - 8 S.
In: Rapid communications in mass spectrometry, ISSN 1097-0231. 33(2019), 4, Seite 343-350
DOI: 10.1002/rcm.8355
Polag, Daniela: Long-term monitoring of breath methane / Daniela Polag, Frank Keppler. - 9 S.
In: The science of the total environment, ISSN 1879-1026. 624(2018), S. 69-77
DOI: 10.1016/j.scitotenv.2017.12.097
Hepp, Johannes: Late Quaternary relative humidity changes from Mt. Kilimanjaro, based on a coupled 2H-18O biomarker paleohygrometer approach / Johannes Hepp, Roland Zech, Kazimierz Rozanski, Mario Tuthorn, Bruno Glaser, Markus Greule, Frank Ke… , 11 April 2017. - 15 S.
In: Quaternary international, ISSN 1040-6182. 438(2017), Seite 116-130
DOI: 10.1016/j.quaint.2017.03.059
Geißler, Katrin: Vanilla authenticity control by DNA barcoding and isotope data aggregation / Katrin Geißler, Markus Greule, Uwe Schäfer, Joachim Hans, Torsten Geißler, Lars Meier, Frank Keppler… , 8 June 2017. - 10 S.
In: Flavour and fragrance journal, ISSN 1099-1026. 32(2017), 4, Seite 228-237
DOI: 10.1002/ffj.3379
Benzing, Kathrin Julia: Nonheme iron-oxo-catalyzed methane formation from methyl thioethers : scope, mechanism, and relevance for natural systems / Kathrin Benzing, Peter Comba, Bodo Martin, Bianca Pokrandt, Frank Keppler. - 8 S.
In: Chemistry - a European journal, ISSN 1521-3765. 23(2017), 43, S. 10465-10472
DOI: 10.1002/chem.201701986
Riechelmann, Dana: Warm season precipitation signal in [delta]2H values of wood lignin methoxyl groups from high elevation larch trees in Switzerland / Dana F.C. Riechelmann, Markus Greule, Rolf T.W. Siegwolf, Tobias Anhäuser, Jan Esper, Frank Keppler, 15 October 2017. - 10 S.
In: Rapid communications in mass spectrometry, ISSN 1097-0231. 31(2017), 19, Seite 1589-1598
DOI: 10.1002/rcm.7938
Mulat, Daniel Girma: Exogenous addition of H2 for an in situ biogas upgrading through biological reduction of carbon dioxide into methane / Daniel Girma Mulat, Freya Mosbæk, Alastair James Ward, Daniela Polag, Markus Greule, Frank Keppler, … , 13 June 2017. - 11 S.
In: Waste management, ISSN 1879-2456. 68(2017), Seite 146-156
DOI: 10.1016/j.wasman.2017.05.054
Schreiber, Ulrich C.: Organic compounds in fluid inclusions of Archean quartz : analogues of prebiotic chemistry on early earth / Ulrich Schreiber, Christian Mayer, Oliver J. Schmitz, Pia Rosendahl, Amela Bronja, Markus Greule, Fr… , June 14, 2017. - 9 S.
In: PLOS ONE, ISSN 1932-6203. 12(2017,6) Artikel-Nummer e0177570, 9 Seiten
DOI: 10.1371/journal.pone.0177570
Keppler, Frank: Chloromethane emissions in human breath / Frank Keppler, Jan Fischer, Tobias Sattler, Daniela Polag, Nicole Jaeger, Heinz Friedrich Schöler, M… , 30 June 2017. - 6 S.
In: The science of the total environment, ISSN 1879-1026. 605/606(2017), Seite 405-410
DOI: 10.1016/j.scitotenv.2017.06.202
Anhäuser, Tobias: Mean annual temperatures of mid-latitude regions derived from [delta]2H values of wood lignin methoxyl groups and its implications for paleoclimate studies / Tobias Anhäuser, Markus Greule, Daniela Polag, Gabriel J. Bowen, Frank Keppler, 2017. - 7 S.
In: The science of the total environment, ISSN 1879-1026. 574(2017), Seite 1276-1282
DOI: 10.1016/j.scitotenv.2016.07.189
Anhäuser, Tobias: Stable hydrogen isotope values of lignin methoxyl groups of four tree species across Germany and their implication for temperature reconstruction / Tobias Anhäuser, Markus Greule, Frank Keppler, 2017. - 9 S.
In: The science of the total environment, ISSN 1879-1026. 579(2017), Seite 263-271
DOI: 10.1016/j.scitotenv.2016.11.109
Lenhart, Katharina: Evidence for methane production by the marine algae Emiliania huxleyi / Katharina Lenhart, Thomas Klintzsch, Gerald Langer, Gernot Nehrke, Michael Bunge, Sylvia Schnell, an… , 2016. - 12 S.
In: Biogeosciences, ISSN 1726-4189. 13(2016), 10, Seite 3163-3174
DOI: 10.5194/bg-13-3163-2016
Riechelmann, Dana: Climate signals in [delta]13C of wood lignin methoxyl groups from high-elevation larch trees / Dana F.C. Riechelmann, Markus Greule, Kerstin Treydte, Jan Esper, Frank Keppler, 2016. - 12 S.
In: Palaeogeography, palaeoclimatology, palaeoecology, ISSN 0031-0182. 445(2016), Seite 60-71
DOI: 10.1016/j.palaeo.2016.01.001
Keppler, Frank: Stable isotope and high precision concentration measurements confirm that all humans produce and exhale methane / Frank Keppler, Amanda Schiller, Robert Ehehalt, Markus Greule, Jan Hartmann and Daniela Polag, 29 January 2016. - ? S.
In: Journal of breath research, ISSN 1752-7163. 10(2016,1) Artikel-Nummer 016003
DOI: 10.1088/1752-7155/10/1/016003
Polag, Daniela: Online monitoring of stable carbon isotopes of methane in anaerobic digestion as a new tool for early warning of process instability / D. Polag, T. May, L. Müller, H. König, F. Jacobi, S. Laukenmann, F. Keppler. - 10 S.
In: Bioresource technology, ISSN 1873-2976. 197(2015), S. 161-170
DOI: 10.1016/j.biortech.2015.08.058
Mischel, Maria: [Delta]2H, [delta]13C and [delta]18O from whole wood, α-cellulose and lignin methoxyl groups in Pinus sylvestris : a multi-parameter approach / Maria Mischel, Jan Esper, Frank Keppler, Markus Greule, Willy Werner, 08.07.2015. - 16 S.
In: Isotopes in environmental and health studies, ISSN 1477-2639. 51(2015), 4, Seite 553-568
DOI: 10.1080/10256016.2015.1056181
Keppler, Frank: Leben wir in einem neuen Zeitalter? / Frank Keppler. -
Heidelberg: Universitätsbibliothek Heidelberg, 2015. - Online-Ressource
McRoberts, W. Colin: Seasonal changes in chlorine and methoxyl content of leaves of deciduous trees and their impact on release of chloromethane and methanol at elevated temperatures / W. Colin McRoberts ; Frank Keppler ; David B. Harper ; John T. G. Hamilton. - 12 S.
In: Environmental chemistry, ISSN 1449-8979. 12(2015), 4, S. 426-437
DOI: 10.1071/EN14208
Lenhart, Katharina: Nitrous oxide and methane emissions from cryptogamic covers / Katharina Lenhart ; Bettina Weber ; Wolfgang Elbert ; Jörg Steinkamp ; Tim Clough ; Paul Crutzen ; U… . - 12 S.
In: Global change biology, ISSN 1365-2486. 21(2015), 8, S. ?
DOI: 10.1111/gcb.12995
May, Tobias: Design and application of a synthetic DNA standard for real-time PCR analysis of microbial communities in a biogas digester / T. May ; M. Koch-Singenstreu ; J. Ebling ; R. Stantscheff ; L. Müller ; F. Jacobi ; D. Polag ; F. Ke… . - 9 S.
In: Applied microbiology and biotechnology, ISSN 1432-0614. 99(2015), S. 6721-6729
DOI: 10.1007/s00253-015-6721-z
Greule, Markus: Comment on authenticity and traceability of vanilla flavors by analysis of stable isotopes of carbon and hydrogen / Markus Greule; Armin Mosandl; John T. G. Hamilton; Frank Keppler, 2015. - 2 S.
In: Journal of agricultural and food chemistry, ISSN 1520-5118. 63(2015), 21, Seite 5305-5306
DOI: 10.1021/jf506172q
Lenhart, Katharina: Technical note: Methionine, a precursor of methane in living plants / K. Lenhart; F. Althoff; M. Greule; F. Keppler, 2015. - 8 S.
In: Biogeosciences, ISSN 1726-4189. 12(2015), 6, Seite 1907-1914
DOI: 10.5194/bg-12-1907-2015
Anhäuser, Tobias: Stable hydrogen and carbon isotope ratios of methoxyl groups during plant litter degradation / Tobias Anhäuser; Markus Greule; Michael Zech; Karsten Kalbitz; Colin McRoberts; Frank Keppler, 2015. - 12 S.
In: Isotopes in environmental and health studies, ISSN 1477-2639. 51(2015), 1, Seite 143-154
DOI: 10.1080/10256016.2015.1013540
Greule, Markus: A stable isotope approach to assessing water loss in fruits and vegetables during storage / Markus Greule; Andreas Rossmann; Hanns-Ludwig Schmidt; Armin Mosandl; Frank Keppler, 2015. - 8 S.
In: Journal of agricultural and food chemistry, ISSN 1520-5118. 63(2015), 7, Seite 1974-1981
DOI: 10.1021/jf505192p
Nadalig, Thierry: Probing the diversity of chloromethane-degrading bacteria by comparative genomics and isotopic fractionation / Nadalig, T.; Greule, M.; Bringel, F.; Keppler, F.; Vuilleumier.; S., 2014. - 11 S.
In: Frontiers in microbiology, ISSN 1664-302X. 5(2014) Art.-Nr. 523, 11 S.
DOI: 10.3389/fmicb.2014.00523
Anhäuser, Tobias: D/H ratios of methoxyl groups of the sedimentary organic matter of Lake Holzmaar (Eifel, Germany) : a potential palaeoclimate/-hydrology proxy / Tobias Anhäuser; Frank Sirocko; Markus Greule; Jan Esper; Frank Keppler, 2014. - 14 S.
In: Geochimica et cosmochimica acta, ISSN 0016-7037. 142(2014), Seite 39-52
DOI: 10.1016/j.gca.2014.08.001
Althoff, Frederik: Abiotic methanogenesis from organosulphur compounds under ambient conditions / Frederik Althoff ; Kathrin Benzing ; Peter Comba ; Colin McRoberts ; Derek R. Boyd ; Steffen Greiner…
In: Nature Communications, ISSN 2041-1723. 5(2014) Artikel-Nr. 4205
DOI: 10.1038/ncomms5205
Polag, Daniela: Age dependent breath methane in the German population / Daniela Polag ; Ottmar Leiß ; Frank Keppler. - 6 S.
In: The science of the total environment, ISSN 1879-1026. 481(2014), S. 582-587
DOI: 10.1016/j.scitotenv.2014.02.086
Polag, Daniela: Stable carbon isotopes of methane for real-time process monitoring in anaerobic digesters / Daniela Polag ; Lutz Christian Krapf ; Hauke Heuwinkel ; Stephan Laukenmann ; Jos Lelieveld ; Frank … . - 8 S.
In: Engineering in life sciences, ISSN 1618-2863. 14(2014), 2, S. 153-160
DOI: 10.1002/elsc.201200201
Horst, Axel: Stable bromine isotopic composition of methyl bromide released from plant matter / Axel Horst ; Henry Holmstrand ; Per Andersson ; Brett F. Thornton ; Asher Wishkerman ; Frank Keppler… . - 8 S.
In: Geochimica et cosmochimica acta, ISSN 0016-7037. 125(2014), S. 153-160
DOI: 10.1016/j.gca.2013.10.016
Keppler, Frank: Chloromethane release from carbonaceous meteorite affords new insight into Mars lander findings / Frank Keppler ... Markus Greule ...Tobias Sattler, Heinz F. Schöler ..., 2014. - 11 S.
In: Scientific reports, ISSN 2045-2322. 4(2014) Artikel-Nr. 7010
DOI: 10.1038/srep07010
Nadalig, Thierry: Hydrogen and carbon isotope fractionation during degradation of chloromethane by methylotrophic bacteria / Thierry Nadalig; Markus Greule; Françoise Bringel; Stéphane Vuilleumier; Frank Keppler, 2013. - 8 S.
In: MicrobiologyOpen, ISSN 2045-8827. 2(2013), 6, Seite 893-900
DOI: 10.1002/mbo3.124
Polag, Daniela: Evidence of anaerobic syntrophic acetate oxidation in biogas batch reactors by analysis of 13C carbon isotopes / Daniela Polag; Hauke Heuwinkel; Stephan Laukenmann; Markus Greule; Frank Keppler, 2013. - 13 S.
In: Isotopes in environmental and health studies, ISSN 1477-2639. 49(2013), 3, Seite 365-377
DOI: 10.1080/10256016.2013.805758
Würfel, Oliver: Position-specific isotope analysis of the methyl group carbon in methylcobalamin for the investigation of biomethylation processes / Oliver Wuerfel; Markus Greule; Frank Keppler; Maik A. Jochmann; Torsten C. Schmidt, 2013. - 9 S.
In: Analytical and bioanalytical chemistry, ISSN 1618-2650. 405(2013), 9, Seite 2833-2841
DOI: 10.1007/s00216-012-6635-x
Gori, Yuri: Carbon, hydrogen and oxygen stable isotope ratios of whole wood, cellulose and lignin methoxyl groups of Picea abies as climate proxies / Y. Gori; R. Wehrens; M. Greule; F. Keppler; L. Ziller; N. La Porta; F. Camin, 2013. - 11 S.
In: Rapid communications in mass spectrometry, ISSN 1097-0231. 27(2013), 1, Seite 265-275
DOI: 10.1002/rcm.6446
Greule, Markus: Stable hydrogen-isotope analysis of methyl chloride emitted from heated halophytic plants / Markus Greule; Stefan G. Huber; Frank Keppler, 2012. - 9 S.
In: Atmospheric environment, ISSN 1878-2442. 62(2012), Seite 584-592
Lenhart, Katharina: Evidence for methane production by saprotrophic fungi / K. Lenhart ... M. Greule ... F. Keppler, 2012. - 9 S.
In: Nature Communications, ISSN 2041-1723. 3(2012) Article number 1046, 8 Seiten
DOI: 10.1038/ncomms2049
Keppler, Frank: Ultraviolet-radiation-induced methane emissions from meteorites and the Martian atmosphere / Frank Keppler.... - 4 S.
In: Nature, ISSN 1476-4687. 486(2012), 7401, S. 93-96
DOI: 10.1038/nature11203
Hurkuck, Miriam: Release of methane from aerobic soil : An indication of a novel chemical natural process? / Miriam Hurkuck ; Frederik Althoff ; Hermann F. Jungkunst ; Alke Jugold ; Frank Keppler. - 6 S.
In: Chemosphere, ISSN 1879-1298. 86(2012), 6, S. 684-689
DOI: 10.1016/j.chemosphere.2011.11.024
Derendorp, Leonie: Methyl chloride emissions from halophyte leaf litter : dependence on temperature and chloride content / Leonie Derendorp ; Asher Wishkerman ; Frank Keppler ; Colin McRoberts ; Rupert Holzinger ; Thomas Rö… . - 7 S.
In: Chemosphere, ISSN 1879-1298. 87(2012), 5, S. 483-489
DOI: 10.1016/j.chemosphere.2011.12.035
Greule, Markus: Stable isotope determination of ester and ether methyl moieties in plant methoxyl groups / Markus Greule; Frank Keppler, 2011. - 13 S.
In: Isotopes in environmental and health studies, ISSN 1477-2639. 47(2011), 4, Seite 470-482
DOI: 10.1080/10256016.2011.616270
Wang, Zhiping: Non-microbial methane emissions from fresh leaves : effects of physical wounding and anoxia / Zhiping Wang; Frank Keppler; Markus Greule; John T.G. Hamilton, 2011. - 7 S.
In: Atmospheric environment, ISSN 1878-2442. 45(2011), 28, Seite 4915-4921
DOI: 10.1016/j.atmosenv.2011.06.001
Derendorp, Leonie: Methyl chloride and C2-C5 hydrocarbon emissions from dry leaf litter and their dependence on temperature / Leonie Derendorp ; Rupert Holzinger ; Asher Wishkerman ; Frank Keppler ; Thomas Röckmann. - 8 S.
In: Atmospheric environment, ISSN 1878-2442. 45(2011), 18, S. 3112-3119
DOI: 10.1016/j.atmosenv.2011.03.016
Wishkerman, Asher: Enhanced formation of methane in plant cell cultures by inhibition of cytochrome c oxidase / A. Wishkerman ; S. Greiner ... T. Rausch ... F. Keppler. - 8 S.
In: Plant, cell & environment, ISSN 1365-3040. 34(2011), 3, S. 457-464
DOI: 10.1111/j.1365-3040.2010.02255.x
Vigano, Ivan: Water drives the deuterium content of the methane emitted from plants / I. Vigano; R. Holzinger; F. Keppler; M. Greule; W. A. Brand; H. Geilmann; H. van Weelden; T.Röckmann, 2010. - 9 S.
In: Geochimica et cosmochimica acta, ISSN 0016-7037. 74(2010), 14, Seite 3865-3873
DOI: 10.1016/j.gca.2010.03.030
Althoff, Frederik: Methane formation by oxidation of ascorbic acid using iron minerals and hydrogen peroxide / F. Althoff ; A. Jugold ; F. Keppler. - 7 S.
In: Chemosphere, ISSN 1879-1298. 80(2010), S. 286-292
DOI: 10.1016/j.chemosphere.2010.04.004
Keppler, Frank: Measurements of 13C/12C methane from anaerobic digesters : comparison of optical spectrometry with continuous-flow isotope ratio mass spectrometry / F. Keppler; S. Laukenmann; J. Rinne; H. Heuwinkel; M. Greule; M. Whiticar; J. Lelieveld, 2010. - 7 S.
In: Environmental science & technology, ISSN 1520-5851. 44(2010), 13, Seite 5067-5073
DOI: 10.1021/es100460d
Röckmann, Thomas: Isotopic composition of H2 from wood burning : dependency on combustion efficiency, moisture content, and [delta]D of local precipitation / Thomas Röckmann; Catalina X. Gómez Álvarez; Sylvia Walter; Carina van der Veen; Adam G. Wollny; Sach… , 2010. - 11 S.
In: Journal of geophysical research, ISSN 2169-8996. 115(2010,D17) Artikel-Nr. D17308, 11 S.
DOI: 10.1029/2009JD013188
Greule, Markus: Improved rapid authentication of vanillin using [delta]13C and [delta]2H values / Markus Greule; Luisa Dana Tumino; Tatjana Kronewald; Uwe Hener; Jürgen Schleucher; Armin Mosandl; Fr… , 2010. - 9 S.
In: European food research and technology, ISSN 1438-2385. 231(2010), 6, Seite 933-941
DOI: 10.1007/s00217-010-1346-z
Laukenmann, Stephan: Identification of methanogenic pathways in anaerobic digesters using stable carbon isotopes / Stephan Laukenmann; Daniela Polag; Hauke Heuwinkel; Markus Greule; Andreas Gronauer; Jos Lelieveld; … , 2010. - 6 S.
In: Engineering in life sciences, ISSN 1618-2863. 10(2010), 6, Seite 509-514
DOI: 10.1002/elsc.201000074
Weissflog, Ludwig: Late Permian changes in conditions of the atmosphere and environments caused by halogenated gases / L. Weissflog; N. F. Elansky; K. Kotte; F. Keppler; A. Pfennigsdorff; C. A. Lange; E. Putz; L. V. Lis… , 2009. - 5 S.
In: Doklady earth sciences, ISSN 1531-8354. 425(2009), 2, Seite 291-295
DOI: 10.1134/S1028334X09020263
Vigano, Ivan: The stable isotope signature of methane emitted from plant material under UV irradiation / I. Vigano; T.Röckmann; R. Holzinger; A. van Dijk; F. Keppler; M. Greule; W.A. Brand; H. Geilmann; H… , 2009. - 10 S.
In: Atmospheric environment, ISSN 1878-2442. 43(2009), 35, Seite 5637-5646
DOI: 10.1016/j.atmosenv.2009.07.046
Greule, Markus: A simple rapid method to precisely determine 13C/12C ratios of plant methoxyl groups / Markus Greule; Armin Mosandl; John T. G. Hamilton; Frank Keppler, 2009. - 5 S.
In: Rapid communications in mass spectrometry, ISSN 1097-0231. 23(2009), 11, Seite 1710-1714
DOI: 10.1002/rcm.4057
Yassaa, Noureddine: Fast determination of methyl chloride and methyl bromide emissions from dried plant matter and soil samples using HS-SPME and GC-MS: method and first results / Noureddine Yassaa ; Asher Wishkerman ; Frank Keppler ; Jonathan Williams. - 8 S.
In: Environmental chemistry, ISSN 1449-8979. 6(2009), 4, S. 311-318
DOI: 10.1071/EN09034
Keppler, Frank: Methane formation in aerobic environments / Frank Keppler ; Mihály Boros ; Christian Frankenberg ; Jos Lelieveld ; Andrew McLeod ; Anna Maria Pi… . - 7 S.
In: Environmental chemistry, ISSN 1449-8979. 6(2009), 6, S. 459-465
DOI: 10.1071/EN09137
Draxler, Susanne: Ansätze zur regionalen Quantifizierung von Methan aus Pflanzen / S. Draxler ; F. Keppler. - 5 S.
In: Umweltwissenschaften und Schadstoff-Forschung, ISSN 1865-5084. 20(2008), 1, S. 75-79
DOI: 10.1065/uwsf2007.08.20
Keppler, Frank: Methoxyl groups of plant pectin as a precursor of atmospheric methane : evidence from deuterium labelling studies / Frank Keppler ; John T. G. Hamilton ; W. Colin McRoberts ; Ivan Vigano ; Marc Braß ; Thomas Röckmann. - 7 S.
In: The new phytologist, ISSN 1469-8137. 178(2008), 4, S. 808-814
DOI: 10.1111/j.1469-8137.2008.02468.x
Vigano, Ivan: Effect of UV radiation and temperature on the emission of methane from plant biomass and structural components / I. Vigano ; H. van Weelden ; R. Holzinger ; F. Keppler ; A. McLeod ; T. Röckmann. - 11 S.
In: Biogeosciences, ISSN 1726-4189. 5(2008), S. 937-947
DOI: 10.5194/bg-5-937-2008
Wishkerman, Asher: Abiotic methyl bromide formation from vegetation, and iIts strong dependence on temperature / Asher Wishkerman ; Sarah Gebhardt ; Colin W. McRoberts ; John T. G. Hamilton ; Jonathan Williams ; F… . - 6 S.
In: Environmental science & technology, ISSN 1520-5851. 42(2008), 18, S. 6837-6842
DOI: 10.1021/es800411j
Greule, Markus: A rapid and precise method for determination of D/H ratios of plant methoxyl groups / Markus Greule; Armin Mosandl; John T. G. Hamilton; Frank Keppler, 2008. - 6 S.
In: Rapid communications in mass spectrometry, ISSN 1097-0231. 22(2008), 24, Seite 3983-3988
DOI: 10.1002/rcm.3817
Keppler, Frank: Tracing the geographical origin of early potato tubers using stable hydrogen isotope ratios of methoxyl groups / Keppler, F. ; Hamilton, J. T. G.. - 11 S.
In: Isotopes in environmental and health studies, ISSN 1477-2639. 44(2008), 4, S. 337-347
DOI: 10.1080/10256010802507383
Rösing, Gerhard: Verfahren zur Herstellung von Biogas / Gerhard Rösing; Frank Keppler. -
Geneva: WIPO, 2007. - 1 Online-Ressource (32 S.)
Keppler, Frank: Stable hydrogen isotope ratios of lignin methoxyl groups as a paleoclimate proxy and constraint of the geographical origin of wood / Keppler, F. ; Harper, D. B. ; Kalin, R. M. ; Meier-Augenstein, W. ; Farmer, N. ; Davis, S. ; Schmidt… . - 10 S.
In: The new phytologist, ISSN 1469-8137. 176(2007), 3, S. 600-609
DOI: 10.1111/j.1469-8137.2007.02213.x
Houweling, Sander: Atmospheric constraints on global emissions of methane from plants / S. Houweling ; T. Röckmann ; I. Aben ; F. Keppler ; M. Krol ; J. F. Meirink ; E. J. Dlugokencky ; C.… . - 5 S.
In: Geophysical research letters, ISSN 1944-8007. 33(2006), 15
DOI: 10.1029/2006GL026162
Keppler, Frank: Methane emissions from terrestrial plants under aerobic conditions / Frank Keppler ; John T. G. Hamilton: Marc Brass ; Thomas Röckmann. - 5 S.
In: Nature, ISSN 1476-4687. 439(2006), ?, S. 187-191
DOI: 10.1038/nature0442
Keppler, Frank: De novo formation of chloroethyne in soil / Frank Keppler; Reinhard Borchers; John T. G. Hamilton; Gerhard Kilian; Jens Pracht; Heinz F. Schöler, 2006. - 5 S.
In: Environmental science & technology, ISSN 1520-5851. 40(2006), 1, Seite 130-134
DOI: 10.1021/es0513279
Schöler, Heinz Friedrich: Abiotic formation of organohalogens in the terrestrial environment / Schöler, H.F., Keppler, F., 2005. - 10 S.
In: Volatile chlorinated hydrocarbons. (2005), Seite 14-23
Keppler, Frank: New insight into the atmospheric chloromethane budget gained using stable carbon isotope ratios / F. Keppler ; D. B. Harper ; T. Röckmann ; R. M. Moore ; J. T. G. Hamilton. - 9 S.
In: Atmospheric chemistry and physics, ISSN 1680-7324. 5(2005), 9, S. 2403-2411
DOI: 10.5194/acp-5-2403-2005
Biester, Harald: Halogen retention, organohalogens and the role of organic matter decomposition on halogen enrichment in two Chilean peat bogs / H. Biester; F. Keppler; A. Putschew; A. Martinez-Cortizas; M. Petri, 2004. - 8 S.
In: Environmental science & technology, ISSN 1520-5851. 38(2004), 7, Seite 1984-1991
DOI: 10.1021/es0348492
Keppler, Frank: Carbon isotope anomaly in the major plant C1 pool and its global biogeochemical implications / F. Keppler ; R. M. Kalin ; D. B. Harper ; W. C. McRoberts ; Hamilton. - 9 S.
In: Biogeosciences, ISSN 1726-4189. 1(2004), 2, S. 123-131
DOI: 10.5194/bg-1-123-2004
Schöler, Heinz Friedrich: Abiotic formation of organohalogens during early diagenetic processes / Heinz F. Schöler; Frank Keppler, 2003. - 22 S.
In: Natural production of organohalogen compounds. (2003), Seite 63-84
DOI: 10.1007/b 10446
Niedan, Volker Wolfgang: De novo formation of organochlorines in a sewage treatment plant / V. W. Niedan; F. Keppler; B. Ahlsdorf; H. F. Schöler, 2003. - 11 S.
In: Biogeochemistry, ISSN 1573-515X. 62(2003), 3, Seite 277-287
DOI: 10.1023/A:1021185730441
Putschew, Anke: Differentiation of the halogen content of peat samples using ion chromatography after combustion (TX/TOX-IC) / Anke Putschew; Frank Keppler; Martin Jekel, 2003. - 5 S.
In: Analytical and bioanalytical chemistry, ISSN 1618-2650. 375(2003), 6, Seite 781-785
DOI: 10.1007/s00216-003-1797-1
Keppler, Frank: Formation of volatile iodinated alkanes in soil: results from laboratory studies / Frank Keppler; Reinhard Borchers; Petteri Elsner; Isabelle Fahimi; Jens Pracht; Heinz F. Schöler, 2003. - 7 S.
In: Chemosphere, ISSN 1879-1298. 52(2003), 2, Seite 477-483
DOI: 10.1016/S0045-6535(03)00198-X
Fahimi, Isabelle Jasmine: Formation of chloroacetic acids from soil, humic acid and phenolic moieties / I. J. Fahimi; F. Keppler; H.F. Schöler, 2003. - 8 S.
In: Chemosphere, ISSN 1879-1298. 52(2003), 2, Seite 513-520
DOI: 10.1016/S0045-6535(03)00212-1
Schöler, Heinz Friedrich: Fluxes of trichloroacetic acid between atmosphere, biota, soil, and groundwater / H. F. Schöler; F. Keppler; I. J. Fahimi; V. W. Niedan, 2003. - 16 S.
In: Chemosphere, ISSN 1879-1298. 52(2003), 2, Seite 339-354
DOI: 10.1016/S0045-6535(03)00214-5
Keppler, Frank: Peatlands : a major sink of naturally formed organic chlorine / Frank Keppler; Harald Biester, 2003. - 3 S.
In: Chemosphere, ISSN 1879-1298. 52(2003), 2, Seite 451-453
DOI: 10.1016/S0045-6535(03)00210-8
Hamilton, John T. G.: Chloride methylation by plant pectin : an efficient environmentally eignificant process / John T. G. Hamilton ; W. Colin McRoberts ; Frank Keppler ; Robert M. Kalin ; David B. Harper. - 4 S.
In: Science, ISSN 1095-9203. 301(2003), S. 206-209
DOI: 10.1126/science.1085036
Keppler, Frank: Organoiodine formation during humification in peatlands / F. Keppler; H. Biester; A. Putschew; P. J. Silk; H. F. Schöler; G. Müller, 2003. - 5 S.
In: Environmental chemistry letters, ISSN 1610-3661. 1(2003), 4, Seite 219-223
DOI: 10.1007/s10311-003-0044-5
Keppler, Frank: Report on the Second International Conference on ‘Naturally Produced Organohalogens’ / Frank Keppler, Heinz Friedrich Schöler, March 2002. - 1 S.
In: Environmental science and pollution research, ISSN 1614-7499. 9(2002), 2, Seite 154
DOI: 10.1007/BF02987468
Keppler, Frank: Natürliche Ozonkiller aus dem Boden / Frank Keppler, Heinz Friedrich Schöler, 2002. - 5 S.
In: Ruperto Carola, ISSN 0035-998X. (2002), 2, Seite 20-24
Keppler, Frank: Natural formation of vinyl chloride in the terrestrial environment / Frank Keppler; Reinhard Borchers; Jens Pracht; Stefan Rheinberger; Heinz Friedrich Schöler, 2002. - 5 S.
In: Environmental science & technology, ISSN 1520-5851. 36(2002), Seite 2479-2483
DOI: 10.1021/es015611l
Pracht, Jens: Abiotic Fe(III) induced mineralization of phenolic substances / J. Pracht; J. Boenigk; M. Isenbeck-Schröter; F. Keppler; H.F. Schöler, 2001. - 7 S.
In: Chemosphere, ISSN 1879-1298. 44(2001), 4, Seite 613-619
DOI: 10.1016/S0045-6535(00)00490-2
Keppler, Frank: Halocarbons produced by natural oxidation processes during degradation of organic matter / F. Keppler; R. Eiden; V. Niedan; J. Pracht; H. F. Schöler, 2000. - 4 S.
In: Nature, ISSN 1476-4687. 403(2000), Seite 298-301
DOI: 10.1038/35002055
Keppler, Frank: Abiotische Bildung leichtflüchtiger Organohalogenverbindungen im Boden / [vorgelegt von Frank Keppler], 2000. - 85 Bl. : Ill., graph. Darst.
Niedan, Volker Wolfgang: Bildung von Organohalogenen in einer kommunalen Kläranlage / V. W. Niedan; F. Keppler; B. Ahlsdorf; H. F. Schöler, 1998. - 10 S.
In: Vom Wasser, ISSN 0083-6915. 91(1998), Seite 175-184

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