Univ.-Prof. Dipl.-Geol. Dr. Stephan Krämer
T: +43-1-4277-53463





Brocza, FM, Wiederhold, JG, Biester, H, Krämer, S, Richard, J-H & Mishra, B 2018, 'Mercury speciation at a former wood preservation site' Beitrag in, Krakov, Polen, 22/07/18 - 27/07/18, .

Brocza, FM, Biester, H, Mishra, B, Richard, J-H, Krämer, S & Wiederhold, JG 2018, 'Terrestrial Biogeochemistry of Hg at a Wood Preservation Site', Honolulu, USA / Vereinigte Staaten, 3/06/18 - 8/06/18, .


Rushworth, D, Reyes, C, STEINLE, LEA, Schenkeveld, W, LEHMANN, MORITZF & Krämer, S 2018, 'Laboratory investigations of copper acquisition – an important cofactor in methane oxidation', Vienna, Österreich, 8/04/18 - 13/04/18, .


Chardi, K, Krämer, S, Schenkeveld, W & Giammar, D 2018, 'Laboratory Simulation of a Uranium Roll-Front in a Freshwater Aquifer', Ascona, Schweiz, 21/10/18 - 26/10/18, .

Brocza, FM, Biester, H, Richard, J-H, Krämer, S & Wiederhold, JG 2017, 'Tracing Hg transformations in contaminated soil using Hg isotopes', Vienna, Österreich, 24/11/17 - 25/11/17, .

Wiederhold, JG, Brocza, FM, Grigg, A & Krämer, S 2017, 'Tracing sources and fate of mercury in soils and groundwater at industrial contamination sites with stable mercury isotopes' Beitrag in, Vienna, Österreich, 24/11/17 - 25/11/17, .


Brocza, FM, Biester, H, Richard, J-H, Krämer, S & Wiederhold, JG 2017, 'Tracing Hg transformations in contaminated soil using Hg isotopes' Goldschmidt Conference 2017, Paris, Frankreich, 13/08/17 - 18/08/17, .



Brocza, FM, Biester, H, Richard, J-H, Krämer, S & Wiederhold, JG 2017, 'Tracing mercury transformations in a contaminated soil-aquifer system using Hg isotope signatures', Ascona, Schweiz, 9/07/17 - 14/07/17, .


Kang, K, Biswakarma, J, Borowski, S, Hug, S, Hering, J, Schenkeveld, W & Krämer, S 2017, 'Ligand-controlled Fe mobilization catalyzed by adsorbed Fe(II) on Fe(hydr)oxides' EGU General Assembly 2017, Vienna, Österreich, 23/04/17 - 28/04/17, .




Rushworth, DD, Reyes, C, STEINLE, LEA, Schenkeveld, W, LEHMANN, MORITZF & Krämer, S 2017, 'Laboratory and field investigations of methanotrophic copper acquisition' Goldschmidt Conference 2017, Paris, Frankreich, 13/08/17 - 18/08/17, S. 1.

Rushworth, DD, Reyes, C, STEINLE, LEA, Schenkeveld, W, LEHMANN, MORITZF, Schleper, C & Krämer, S 2017, 'Laboratory investigations of copper acquisition by the aerobic methanotroph Methylosinus trichosporium OB3b and the ammonia oxidizing archaeon Nitrososphaera viennensis' 5th International Conference on Nitrification (ICON5), Vienna, Österreich, 23/07/17 - 27/07/17, .

Walter, M, Schenkeveld, W, Reissner, M, Gille, L & Krämer, S 2016, 'Understanding the radical forming potential (RFP) of pristine and (environmentally) altered asbestos fibers' Advanced Lecture Course on Redox Regulation of Metabolic Processes, Spetses, Griechenland, 19/09/16 - 25/09/16, .

Walter, M, Schenkeveld, W, Gille, L, Reissner, M & Krämer, S 2016, 'Dissolution of chrysotile asbestos and its implications on the fibers' iron surface speciation and radical forming potential: A complementary ICP-OES, EPR and 57Fe Mössbauer study' International Symposium on the Industrial Applications of the Mössbauer Effect, Cape Town, Südafrika, 4/09/16 - 8/09/16, .



Walter, M, Krämer, S & Schenkeveld, W 2016, 'The effect of rhizosphere variables on the geochemistry of phytosiderophores' International Symposium on Iron Nutrition and Interactions in Plants, Madrid, Spanien, 30/06/15 - 3/07/15, .







S, B, Kubicki, J, Krämer, S & Hug, SJ 2015, 'Structures of carboxylates on iron(hydr)oxide surfaces studied with FTIR and DFT calculations', Prague, Tschechische Republik, 16/08/15 - 21/08/15, .

Krämer, S, Duckworth, O, Harrington, JM & Schenkeveld, W 2015, 'Metallophores and Trace Metal Biogeochemistry', Aquatic Geochemistry, Jg. 21, Nr. 2-4, S. 159-195. https://doi.org/10.1007/s10498-014-9246-7


Smrzka, D, Krämer, S, Zwicker, J, Birgel-Rennebeck, D, Fischer, D, Goedert, JL & Peckmann, JL 2015, 'Constraining silica diagenesis in methane-seep deposits', Palaeogeography, Palaeoclimatology, Palaeoecology, S. 13-26.


Smrzka, D, Krämer, S, Zwicker, J, Birgel-Rennebeck, D, Fischer, D, Kasten, S, Goedert, JL & Peckmann, JL 2014, 'Constraining silica diagenesis in methane-seep deposits' IAS 19th International Sedimentological Congress, Genf, Schweiz, 18/08/14 - 22/08/14, .

Schenkeveld, W, Oburger, E, Schindlegger, Y, Puschenreiter, M, Hann, S & Krämer, S 2014, Biogeochemistry of Fe acquisition by phytosiderophores in the rhizosphere. in World Conference of Soil Science (WCSS). Jeju, South Korea.


Schenkeveld, W, Oburger, E, Gruber, B, Schindlegger, Y, Puschenreiter, M, Hann, S & Krämer, S 2014, A window of Fe uptake in strategy II acquisition: a conceptual model for the rhizosphere geochemistry of phytosiderophores. in International Symposium on Iron Nutrition in Plants (ISINIP) 2014. International Symposium on Iron Nutrition in Plants (ISINIP), Gatersleben, Deutschland, 6/07/14.

Schenkeveld, W, Schindlegger, Y, Oburger, E, Puschenreiter, M, Hann, S & Krämer, S 2014, 'Geochemical Processes Constraining Iron Uptake in Strategy II Fe Acquisition', Environmental Science & Technology (Washington), Jg. 48, S. 12662.

Schenkeveld, W, Oburger, E, Gruber, B, Schindlegger, Y, Hann, S, Puschenreiter, M & Krämer, S 2014, 'Metal mobilization from soils by phytosiderophores - experiment and equilibrium modeling', Plant and Soil: international journal on plant-soil relationships, Jg. 383, S. 59-71.

Oburger, E, Gruber, B, Schindlegger, Y, Schenkeveld, W, Hann, S, Krämer, S, Wenzel, WW & Puschenreiter, M 2014, 'Root exudation of phytosiderophores from soil grown wheat', New Phytologist, Jg. 203, S. 1161.


Schenkeveld, W, Oburger, E, Schindlegger, Y, Puschenreiter, M, Hann, S & Krämer, S 2013, Biogeochemistry of phytosiderophores in the rhizosphere. in Monte Verita Workshop : Iron Biogeochemistry: From Molecular Processes to Global Cycles. Ascona, Schweiz.

Pesch, M-L, Christl, I, Hoffmann, M, Krämer, S & Kretzschmar, R 2013, 'Competitive ligand exchange between Cu-humic acid complexes and methanobactin', Geobiology, Jg. 11, Nr. 1, S. 44-54.

Dell'mour, M, Schenkeveld, W, Oburger, E, Fischer, L, Krämer, S, Puschenreiter, M, Lämmerhofer, M, Köllensperger, G & Hann, S 2012, 'Analysis of iron-phytosiderophore complexes in soil related samples: LC-ESI-MS/MS versus CE-MS', Electrophoresis, Jg. 33, Nr. 4 SI, S. 726-733. https://doi.org/10.1002/elps.201100466


Neubauer, E, Schenkeveld, W, von der Kammer, F, Krämer, S & Hofmann, T 2012, Influence of pH on mobilization and formation of iron-dominated colloids in podzol. in Tagungsband EGU General Assembly 2012. Unknown publisher.

Neubauer, E, Schenkeveld, W, von der Kammer, F, Krämer, S & Hofmann, T 2012, 'Influence of pH on mobilization and formation of iron-dominated colloids in podzol' European Geosciences Union, General Assembly 2012, Wien, Österreich, 22/04/12 - 27/04/12, .

Krämer, S, Yoon, S, Semrau, J & DiSpirito, A 2011, 'A simple assay for screening microorganisms for chalkophore production', Methods in Enzymology, Jg. 495, S. 247-258.

Krämer, S, Pesch, M-L, Kretzschmar, R & Christl, I 2011, 'Competitive ligand exchange between Cu-humate complexes and methanobactin', Mineralogical Magazine, Jg. 75, S. 1625-1625.

Krämer, S 2011, 'Copper', Encyclopedia of Earth Sciences Series, Jg. 1, Nr. 1, S. 290-291.



Krämer, S, Pesch, M-L, Kretzschmar, R, Barmettler, K & Christl, I 2011, 'Isolation and purification of Cu-free methanobactin from Methylosinus trichosporium OB3b', Geochemical Transactions, Jg. 12, Nr. 2.

Sánchez-Alcalá, I, Straub, KL, del Campillo, MC, Krämer, S & Torrent, J 2011, 'Microbial Fe(III)-reduction in highly calcareous agricultural soils', Mineralogical Magazine, Jg. 75, Nr. 3, S. 1789. https://doi.org/10.1180/minmag-2011-21



Krämer, S, Schenkeveld, W, Oburger, E, Dell'mour, M, Puschenreiter, M, Walter, M, Hann, S & Stanetty, C 2011, 'The biogeochemistry of phytosiderophores in the rhizosphere in relation to Fe uptake', Mineralogical Magazine, Jg. 75, S. 1812-1812.

Yoon, S, Krämer, S, DiSpirito, A & Semrau, J 2010, 'An assay for screening microbial cultures for chalkophore production', Environmental Microbiology, Jg. 2, Nr. 2, S. 295-303.

Hofmann, T, von der Kammer, F, Neubauer, E & Krämer, S 2010, Influence of sunlight on trace metals carried by natural nanoparticles: insights from the application of different size separation techniques. in Environmental Effects of Nanoparticles and Nanomaterials: 2010, Konferenz, Clemson. Unknown publisher, 5th Annual International Conference on Environmental Effects of Nanoparticles and Nanomaterials, Clemson, USA / Vereinigte Staaten, 22/08/10.

von der Kammer, F, Hofmann, T, Neubauer, E & Krämer, S 2010, 'Influence of sunlight on trace metals carried by natural nanoparticles: insights from the application of different size separation techniques' 5th Annual International Conference on Environmental Effects of Nanoparticles and Nanomaterials, Clemson, USA / Vereinigte Staaten, 22/08/10 - 26/08/10, .

Kiczka, M, Wiederhold, J, Krämer, S, Bourdon, B & Kretzschmar, R 2010, 'Iron Isotope Fractionation during Fe Uptake and Translocation in Alpine Plants', Environmental Science & Technology (Washington), Jg. 44, Nr. 16, S. 6144-6150.

Kiczka, M, Wiederhold, J, Frommer, J, Krämer, S, Bourdon, B & Kretzschmar, R 2010, 'Iron isotope fractionation during proton- and ligand-promoted dissolution of primary phyllosilicates', Geochimica et Cosmochimica Acta, Jg. 74, Nr. 11, S. 3112-3128.





Sánchez-Alcalá, I, Straub, KL, del Campillo, MC, Krämer, S & Torrent, J 2009, Microbial reduction of Fe-bearing minerals in calcareous soils. in FA Podosek (Hrsg.), Awards Ceremony Speeches and Abstracts of the 19th Annual V.M. Goldschmidt Conference - V.M. Goldschmidt Conference: Davos, Switzerland, June, 2009. Geochimica et Cosmochimica Acta, Nr. 13, Suppl., Bd. 73, Elsevier, Amsterdam [u.a.], S. 1151-1151.




Straub, KL, Schink, B & Krämer, S 2009, 'Sulfur cycle mediated microbial reduction of ferric iron', Davos, Schweiz, 21/06/09 - 26/06/09, .




Krämer, S, Borer, P, Kretzschmar, R, Hug, SJ & Sulzberger, B 2008, 'Iron oxide photodissolution in the presence of siderophores', Geochimica et Cosmochimica Acta, Jg. 72, Nr. 12.

Straub, KL, Kappler, A, Haderlein, SB & Krämer, S 2008, Rapid microbial respiratory reduction of biolgically produced ferric iron minerals. in Unknown host publication title. Unknown publisher.

Straub, KL, Kappler, A, Haderlein, SB & Krämer, S 2008, 'Rapid microbial respiratory reduction of biologically produced ferric iron minerals' European Geosciences Union, General Assembly 2008, Wien, Österreich, 13/04/08 - 18/04/08, .


Krämer, S & Crowley, D 2007, Function of Siderophores in the Plant Rhizosphere. in R Pinton (Hrsg.), The rhizosphere: biochemistry and organic substances at the soil-plant interface. 2. Aufl., Books in soils, plants, and the environment, CRC Press Taylor & Francis Group, Boca Raton, S. 173-201. https://doi.org/10.1201/9781420005585.ch7



Wiederhold, J, Teutsch, N, Krämer, S, Halliday, A & Kretzschmar, R 2007, 'Iron isotope fractionation during pedogenesis in redoximorphic soils', Soil Science Society of America Journal, Jg. 71, Nr. 6, S. 1840-1850.

Wiederhold, J, Teutsch, N, Krämer, S, Halliday, A & Kretzschmar, R 2007, 'Iron isotope fractionation in oxic soils by mineral weathering and podzolization', Geochimica et Cosmochimica Acta, Jg. 71, Nr. 23, S. 5821-5833.






Krämer, S, Wiederhold, J, Kiczka, M, Bourdon, B & Kretzschmar, R 2007, 'The impact of Fe isotope fractionation by plants on the isotopic signature of soils', Geochimica et Cosmochimica Acta, Jg. 71, Nr. 15.












Cocozza, C, Tsao, CCG, Cheah, S-F, Krämer, S, Raymond, KN, Miano, TM & Sposito, G 2002, 'Temperature dependence of goethite dissolution promoted by trihydroxamate siderophores', Geochimica et Cosmochimica Acta, Jg. 66, S. 431-438.

Krämer, S, Cheah, S-F, Zapf, R, Xu, J-J, Raymond, KN & Sposito, G 1999, 'Effect of hydroxamate siderophores on Fe release and Pb(II) adsorption by goethite', Geochimica et Cosmochimica Acta, Jg. 63, Nr. 19-20, S. 3003-3008.


Krämer, S & Hering, J 1997, Environmental chemistry of trace metals. in DL Macalady (Hrsg.), Perspectives in environmental chemistry. Oxford University Press, New York, NY [u.a.] .



Localizing crystal-sites of long-term radical formation in altered chrysotile asbestos

Martin Walter (VortragendeR), Walter Schenkeveld (AutorIn), Michael Reissner (AutorIn), Lars Gille (AutorIn), Stephan Krämer (AutorIn)
28 Aug 2017

Aktivität: VorträgeVortragScience to Science


Radical generation and transition metals on chrysotile asbestos surfaces

Martin Walter (VortragendeR), Walter Schenkeveld (AutorIn), Gerald Geroldinger (AutorIn), Lars Gille (AutorIn), Stephan Krämer (AutorIn)
16 Aug 2017

Aktivität: VorträgeVortragScience to Science


Copper Uptake in the Ammonia Oxidizing Archaeon Nitrososphaera Viennensis

Carolina Reyes (VortragendeR), Christa Schleper (AutorIn), Stephan Krämer (AutorIn)
13 Aug 2017

Aktivität: VorträgeVortragScience to Science


Thermodynamic versus kinetic specificity in biological iron acquisition

Stephan Krämer (VortragendeR)
16 Aug 201521 Aug 2015

Aktivität: VorträgeVortragAndere


Thermodynamics and kinetics of plant iron acquisition

Stephan Krämer (VortragendeR)
Jul 2015

Aktivität: VorträgeVortragAndere


Environmental geochemistry at the University of Vienna

Stephan Krämer (VortragendeR)
Apr 2015

Aktivität: VorträgeVortragAndere


Biological iron acquisition: the geochemistry survival kit

Stephan Krämer (VortragendeR)
Feb 2015

Aktivität: VorträgeVortragAndere


Environmental geochemistry at the University of Vienna

Stephan Krämer (VortragendeR)
Apr 2014 → …

Aktivität: VorträgeVortragAndere


Biogeochemical mechanisms of iron cycling in marine and terrestrial environments

Stephan Krämer (VortragendeR)
1 Feb 201428 Feb 2014

Aktivität: VorträgeVortragAndere


Isotopengeochemie an der Universität Wien

Stephan Krämer (VortragendeR)
26 Nov 2013

Aktivität: VorträgeVortragAndere



Photoreductive dissolution of lepidocrocite in the presence and absence of siderophores

Stephan Krämer (VortragendeR)
21 Jun 2009

Aktivität: VorträgeVortragAndere


Institut für Analytische Chemie

Währinger Straße 38
1090 Wien

T: +43-1-4277-53463

stephan.kraemer@univie.ac.at