Dr. Maria Kokh

Current affiliations

Professur für Petrologie (Prof. Klemme)

Academic Education
10/2012 - 12/2015	PhD degree in geochemistry (2016). University of Toulouse III Paul Sabatier. Title: «Role of CO2 in the transfer of economic metals by geological fluids».
Work Experience
07/2022 - 11/2023	postdoc at Muenster University, guest researcher in Potsdam University. Supervisors Prof. M. Wilke, Dr. C. Schmidt and Prof. S. Klemme. Functions: hydrothermal experiments for studying solubility and speciation of molybdenum in hydrothermal fluids (final experiments and results validation).
11/2020 - 05/2022	postdoc at Potsdam University. Supervisors Prof. M. Wilke, Dr. C. Schmidt and Prof. S. Klemme. Functions: hydrothermal ex situ autoclave and in situ XAS and Raman experiments for studying solubility and speciation of molybdenum in hydrothermal fluids.
03/2019 - 11/2019	postdoc at University Grenoble Alpes (ISTerre, Floralis UGA) and at Lorraine University (GeoRessources). Supervisors Prof. L. Truche and Dr. M.-C. Boiron. Functions: data publication, hydrothermal experiments for studying solubilities of the Rare Earth Elements in carbonate alkaline fluids, analyses of experimental solutions and data interpretation.
06/2017 - 12/2018	chargé de recherche CNRS (CDD) at the laboratory Géosciences Environnement Toulouse (GET). Supervisor Dr. G.S. Pokrovski. Functions: experiments for studying isotopic fractionation of sulfur in hydrothermal fluids.
06/2016 - 06/2017	postdoc at Lorraine University, GeoRessources. Supervisors Prof. L. Truche and Dr. M.-C. Boiron. Functions: hydrothermal experiments for studying solubilities of the Rare Earth Elements in brines and CO2-rich fluids, analyses of experimental solutions and data interpretation.

Publications

The role of S3•- in molybdenum transport by hydrothermal fluids revealed by in situ X-ray absorption spectroscopy Kokh, MA; Klemme, S; Schmidt, C; Hazemann, J-L; Testemale, D; Laskar, C; Borchert, M; Bazarkina, EF; Moeller, C; Pokrovski, G; Wilke, M (2023) In: Geochimica et Cosmochimica Acta, 74 Type of Publication: Research article in journal (conference)
A hydrothermal apparatus for X-ray absorption spectroscopy of hydrothermal fluids at DESY Klemme S, Feldhaus M, Potapkin V, Wilke M, Borchert M, Louvel M, Loges A, Rohrbach A, Weitkamp P, Welter E, Kokh M, Schmidt C, Testemale D (2021) In: Review of Scientific Instruments, 92 Type of Publication: Research article (journal)
An arsenic-driven pump for invisible gold in hydrothermal systems Pokrovski G.S., Escoda C., Blanchard M., Testemale D., Hazemann J.L., Gouy S., Kokh M.A., Boiron M.C., De Parseval F., Aigouy T., Menjot L., De Parseval P., Proux O., Rovezzi M., Béziat D., Salvi S., Kouzmanov K., Bartsch T., Pöttgen R., Doert T. (2021) In: Geochemical Perspectives Letters, 17 Type of Publication: Research article (journal)
Quantitative Measurement of Rare Earth Elements in Brines: Isolation from the Charged Matrix Versus Direct LA-ICP-MS Measurements – A Comparative Study Kokh M.A., Luais B., Truche L., Boiron M.C., Peiffert C., Schumacher A. (2021) In: Geostandards and Geoanalytical Research, 45(2) Type of Publication: Research article (journal)
The trisulfur radical ion S3•- controls platinum transport by hydrothermal fluids Pokrovski G.S., Kokh M.A., Desmaele E., Laskar C., Bazarkina E.F., Testemale D., Borisova A.Y., Vuilleumier R., Hazemann J.L., Saitta A.M., Ferlat G. (2021) In: Proceedings of the National Academy of Sciences of the United States of America, 118(34) Type of Publication: Research article (journal)

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Projects

SPP 2238 - Subproject: Natural and experimental constraints on the behaviour of Re in the Earth’s crust: Part B - hydrothermal transport of Re and Mo-Re…

Duration: 01/12/2023 - 30/11/2026 | 1st Funding period

Funded by: DFG - Priority Programme

Type of project: Subproject in DFG-joint project hosted outside University of Münster