{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,4]],"date-time":"2026-03-04T22:56:30Z","timestamp":1772664990993,"version":"3.50.1"},"reference-count":29,"publisher":"Mineralogical Society of America","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2020,2,1]]},"abstract":"<jats:p>The presence of H2 and H2O in planetary interiors prompts the need for fundamental studies on these compounds under corresponding conditions. Here, we summarize data on H2 properties in aqueous systems under conditions of high temperature and pressure. We explain how to measure important H2 fugacities in hydrothermal systems. We present available experimental data and thermodynamic models for H2 solubility and vapor\u2013liquid partitioning under hydrothermal conditions. In addition, we introduce the fascinating world of H2\u2013H2O clathrate hydrates under extreme temperatures and pressures. The properties of the H2\u2013H2O system are well established below the critical point of water (374 \u00b0C and 22.06 MPa), but far less is known under higher temperatures and pressures, or the effect of salt.<\/jats:p>","DOI":"10.2138\/gselements.16.1.33","type":"journal-article","created":{"date-parts":[[2020,3,5]],"date-time":"2020-03-05T19:30:46Z","timestamp":1583436646000},"page":"33-38","source":"Crossref","is-referenced-by-count":23,"title":["The Behavior of H2 in Aqueous Fluids under High Temperature and Pressure"],"prefix":"10.2138","volume":"16","author":[{"given":"Elena F.","family":"Bazarkina","sequence":"first","affiliation":[{"name":"Institute N\u00e9el \/ UPR 2940 CNRS\/University Grenoble Alpes, Grenoble, 38000, France"},{"name":"IGEM RAS, Moscow, 119017, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"I-Ming","family":"Chou","sequence":"first","affiliation":[{"name":"Chinese Academy of Sciences, Sanya, Hainan Province, 572000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alexander F.","family":"Goncharov","sequence":"first","affiliation":[{"name":"Geophysical Laboratory, Carnegie Institution of Washington, Washington D.C. 20015, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nikolay N.","family":"Akinfiev","sequence":"first","affiliation":[{"name":"IGEM RAS, Moscow, 119017, Russia"},{"name":"Moscow State Geological Prospecting University, Moscow, 117485, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"10602","reference":[{"key":"2020030514304159900_B1","doi-asserted-by":"crossref","first-page":"613","DOI":"10.1016\/S0016-7037(02)01141-9","article-title":"Thermodynamic description of aqueous nonelectrolytes at infinite dilution over a wide range of state parameters","volume":"67","author":"Akinfiev","year":"2003","journal-title":"Geochimica et Cosmochimica Acta"},{"key":"2020030514304159900_B2","doi-asserted-by":"crossref","first-page":"217","DOI":"10.2475\/ajs.289.3.217","article-title":"Liquid-vapor relations for the system NaCl-H2O: summary of the P-T-x surface from 300 \u00b0 to 500 \u00b0C","volume":"289","author":"Bischoff","year":"1989","journal-title":"America Journal of Science"},{"key":"2020030514304159900_B3","doi-asserted-by":"crossref","first-page":"265","DOI":"10.1029\/2008GM000752","article-title":"High production and fluxes of H2 and CH4 and evidence of abiotic hydrocarbon synthesis by serpentinization in ultra-mafic-hosted hydrothermal systems on the Mid-Atlantic Ridge","author":"Charlou","year":"2010","journal-title":"Diversity of Hydrothermal Systems on Slow Spreading Ocean Ridges. 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