A hydrothermal apparatus for x-ray absorption spectroscopy of hydrothermal fluids at DESY.

Autor:	Klemme S; Institut für Mineralogie, Universität Münster, Corrensstrasse 24, 48149 Münster, Germany., Feldhaus M; Institut für Mineralogie, Universität Münster, Corrensstrasse 24, 48149 Münster, Germany., Potapkin V; Institut für Mineralogie, Universität Münster, Corrensstrasse 24, 48149 Münster, Germany., Wilke M; Institut für Geowissenschaften, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany., Borchert M; Institut für Mineralogie, Universität Münster, Corrensstrasse 24, 48149 Münster, Germany., Louvel M; Institut für Mineralogie, Universität Münster, Corrensstrasse 24, 48149 Münster, Germany., Loges A; Institut für geologische Wissenschaften, Freie Universität Berlin, Malteserstr. 74-100, 12249 Berlin, Germany., Rohrbach A; Institut für Mineralogie, Universität Münster, Corrensstrasse 24, 48149 Münster, Germany., Weitkamp P; Institut für Mineralogie, Universität Münster, Corrensstrasse 24, 48149 Münster, Germany., Welter E; Deutsches Elektronen-Synchrotron DESY, A Research Centre of the Helmholtz Association, Notkestrasse 85, 22607 Hamburg, Germany., Kokh M; Institut für Geowissenschaften, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany., Schmidt C; GFZ German Research Centre for Geosciences, Telegrafenberg, 14473 Potsdam, Germany., Testemale D; Université Grenoble Alpes, CNRS, Grenoble INP, Institut Néel, 38000 Grenoble, France.
Jazyk:	angličtina
Zdroj:	The Review of scientific instruments [Rev Sci Instrum] 2021 Jun 01; Vol. 92 (6), pp. 063903.
DOI:	10.1063/5.0044767
Abstrakt:	We present a new autoclave that enables in situ characterization of hydrothermal fluids at high pressures and high temperatures at synchrotron x-ray radiation sources. The autoclave has been specifically designed to enable x-ray absorption spectroscopy in fluids with applications to mineral solubility and element speciation analysis in hydrothermal fluids in complex compositions. However, other applications, such as Raman spectroscopy, in high-pressure fluids are also possible with the autoclave. First experiments were run at pressures between 100 and 600 bars and at temperatures between 25 °C and 550 °C, and preliminary results on scheelite dissolution in fluids of different compositions show that the autoclave is well suited to study the behavior of ore-forming metals at P-T conditions relevant to the Earth's crust.
Databáze:	MEDLINE
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