Analytical protocol for measuring micro-molar quantities of sulfur volatile species in experimental high pressure and temperature fluids.

ABSTRACT: Validating thermodynamic models is essential in experimental geosciences for exploring increasingly complex systems and developing analytical protocols. However, investigating solid-fluid equilibria in mm³-sized experimental capsules poses several challenges, particularly in sulfur-bearing chemical systems. These include maintaining bulk fluid composition and performing quantitative analysis with extremely low amounts of synthesized fluid. We present an innovative methodology for measuring ultra-low amounts of sulfur volatiles (H₂S and SO₂) generated during experimental runs at high pressure and temperature conditions of 3 GPa and 700 °C. Using solid sulfides (FeS + FeS₂) and water as reactants, we performed redox-controlled syntheses employing a

SUBMITTER: Secchiari A 

PROVIDER: S-EPMC11758018 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature