Results 31 to 40 of about 68,774 (280)
The Biogeochemical Sulfur Cycle of Marine Sediments
Frontiers in Microbiology, 2019 Microbial dissimilatory sulfate reduction to sulfide is a predominant terminal pathway of organic matter mineralization in the anoxic seabed. Chemical or microbial oxidation of the produced sulfide establishes a complex network of pathways in the sulfur ...
Bo Barker Jørgensen +2 more
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Yankuang ceshi, 2020 BACKGROUND The conventional method for the measurement of sulfur isotopes in sulfate includes mainly barite conversion coupled with dual-inlet SO2 methods. These methods are facile and reliable.
GAO Jian-fei +4 more
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Predictive isotope model connects microbes in culture and nature [PDF]
, 2014 In PNAS, Wing and Halevy (1) present a new model that quantitatively describes the magnitude of sulfur isotope fractionation produced by dissimilatory microbial sulfate reduction (MSR).
Bosak, Tanja, Ono, Shuhei, Sim, Min Sub
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Organosulfur Aerosols Likely Carried Sulfur MIF Signatures in the Early Earth’s Atmosphere
Geochemistry, Geophysics, Geosystems, 2023 Signatures of mass‐independent fractionation (MIF) of sulfur in Archean sulfide and sulfate minerals are widely thought to record an anoxic early Earth’s atmosphere.
Harry Oduro +3 more
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Compound-Specific δ^(34)S Analysis of Volatile Organics by Coupled GC/Multicollector-ICPMS [PDF]
, 2009 We have developed a highly sensitive and robust method for the analysis of δ^(34)S in individual organic compounds by coupled gas chromatography (GC) and multicollector inductively coupled plasma mass spectrometry (MC-ICPMS).
Adkins, Jess F. +2 more
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Heat Capacity of PbS: Isotope Effects [PDF]
, 2007 In recent years, the availability of highly pure stable isotopes has made possible the investigation of the dependence of the physical properties of crystals, in particular semiconductors, on their isotopic composition. Following the investigation of the
A. H. Romero +16 more
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, 2016 The recent report of superconductivity under high pressure at the record transition temperature of Tc=203K in sulfur hydride has been identified as conventional in view of the observation of an isotope effect upon deuteration.
Bianconi, Antonio +4 more
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Energetic radiation and the sulfur chemistry of protostellar envelopes: Submillimeter interferometry of AFGL 2591 [PDF]
, 2007 CONTEXT: The chemistry in the inner few thousand AU of accreting envelopes around young stellar objects is predicted to vary greatly with far-UV and X-ray irradiation by the central star.
A. O. Benz +35 more
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Frontiers in Microbiology, 2017 We investigated the influence of organic substrates and phosphate concentration on the rates of dissimilatory microbial sulfate reduction and the 34S/32S isotopic fractionation produced by several Desulfovibrio species.
Shikma Zaarur +3 more
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Sulfur isotopes in coal constrain the evolution of the Phanerozoic sulfur cycle [PDF]
Proceedings of the National Academy of Sciences, 2013 Sulfate is the second most abundant anion (behind chloride) in modern seawater, and its cycling is intimately coupled to the cycling of organic matter and oxygen at the Earth’s surface. For example, the reduction of sulfide by microbes oxidizes vast amounts of organic carbon and the subsequent reaction of sulfide with iron produces pyrite whose burial ...
Canfield, D.E.
openaire +3 more sources