Search Results - "Kamyshny, Alexey"

Iron and sulfide nanoparticle formation and transport in nascent hydrothermal vent plumes by Findlay, Alyssa J., Estes, Emily R., Gartman, Amy, Yücel, Mustafa, Kamyshny, Alexey, Luther, George W.

“…Deep-sea hydrothermal vents are a significant source of dissolved metals to the global oceans, producing midwater plumes enriched in metals that are…”
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Kinetics and mechanism of polysulfides formation by a reaction between hydrogen sulfide and orthorhombic cyclooctasulfur by Avetisyan, Khoren, Buchshtav, Tamir, Kamyshny, Alexey

“…A detailed study of kinetics of reaction between hydrogen sulfide and orthorhombic cyclooctasulfur at environmentally relevant conditions, which results in…”
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Microbial consumption of zero-valence sulfur in marine benthic habitats by Pjevac, Petra, Kamyshny Jr, Alexey, Dyksma, Stefan, Mußmann, Marc

“…Summary Zero‐valence sulfur (S0) is a central intermediate in the marine sulfur cycle and forms conspicuous accumulations at sediment surfaces, hydrothermal…”
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Dynamics of pyrite formation and organic matter sulfurization in organic-rich carbonate sediments by Shawar, Lubna, Halevy, Itay, Said-Ahmad, Ward, Feinstein, Shimon, Boyko, Valeria, Kamyshny, Alexey, Amrani, Alon

“…Organic-rich carbonate sediments are deposited in a range of environments today and in the geologic past. A significant part of organic matter (OM) degradation…”
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Reactivity of hydrogen sulfide toward organic compounds with sulfur-sulfur bonds by Zweig, Irina, Kamyshny, Alexey

“…The presence of organic molecules containing sulfur-sulfur bonds was documented in the water columns and sediments of the natural aquatic systems as well as in…”
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Turnover Rates of Intermediate Sulfur Species ( S x 2 - , S 0 , S 2 O 3 2 - , S 4 O 6 2 - , SO 3 2 - ) in Anoxic Freshwater and Sediments by Findlay, Alyssa J, Kamyshny, Alexey

“…The microbial reduction of sulfate to sulfide coupled to organic matter oxidation followed by the transformation of sulfide back to sulfate drives a dynamic…”
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Kinetics of Thiocyanate Formation by Reaction of Cyanide with Tetrathionate by Kurashova, Irina, Kamyshny, Alexey

“…In aquatic systems a reaction between tetrathionate and cyanide results in the formation of thiocyanate. We have studied kinetics of the reactions of…”
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Sulfidization of lacustrine glacial clay upon Holocene marine transgression (Arkona Basin, Baltic Sea) by Holmkvist, Lars, Kamyshny, Alexey Jr, Bruechert, Volker, Ferdelman, Timothy G, Joergensen, Bo Barker

“…Towards the end of the last deglaciation more than 13,500 years ago the southern Baltic Sea was a freshwater lake, the Baltic Ice Lake, for several thousand…”
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Pathways for Neoarchean pyrite formation constrained by mass-independent sulfur isotopes by Farquhar, James, Cliff, John, Zerkle, Aubrey L., Kamyshny, Alexey, Poulton, Simon W., Claire, Mark, Adams, David, Harms, Brian

“…It is generally thought that the sulfate reduction metabolism is ancient and would have been established well before the Neoarchean. It is puzzling, therefore,…”
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Equilibrium Distribution of Polysulfide Ions in Aqueous Solutions at Different Temperatures by Rapid Single Phase Derivatization by Kamyshny, Alexey, Gun, Jenny, Rizkov, Dan, Voitsekovski, Tamara, Lev, Ovadia

“…Polysulfides are abundant form of reduced sulfur compounds whose distribution in aquatic systems continues to pose environmental challenge. The Gibbs…”
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Equilibrium Distribution of Polysulfide Ions in Aqueous Solutions at 25 °C:  A New Approach for the Study of Polysulfides' Equilibria by Kamyshny, Alexey, Goifman, Anatoly, Gun, Jenny, Rizkov, Dan, Lev, Ovadia

“…A new approach based on rapid, chemical derivatization in a single phase was used to determine the disproportionation constants and the underlying…”
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Improved cyanolysis protocol for detection of zero‐valent sulfur in natural aquatic systems by Kamyshny, Alexey

“…We propose a novel protocol for detection of reactive zero‐valent sulfur (ZVS) in natural aquatic samples including seawater. Reaction with hot potassium…”
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Quadruple sulfur isotope constraints on the origin and cycling of volatile organic sulfur compounds in a stratified sulfidic lake by Oduro, Harry, Kamyshny, Alexey, Zerkle, Aubrey L., Li, Yue, Farquhar, James

“…We have quantified the major forms of volatile organic sulfur compounds (VOSCs) distributed in the water column of stratified freshwater Fayetteville Green…”
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Impact of Aeolian Dry Deposition of Reactive Iron Minerals on Sulfur Cycling in Sediments of the Gulf of Aqaba by Blonder, Barak, Boyko, Valeria, Turchyn, Alexandra V, Antler, Gilad, Sinichkin, Uriel, Knossow, Nadav, Klein, Rotem, Kamyshny, Jr, Alexey

“…The Gulf of Aqaba is an oligotrophic marine system with oxygen-rich water column and organic carbon-poor sediments (≤0.6% at sites that are not influenced by…”
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Kinetics of Decomposition of Thiocyanate in Natural Aquatic Systems by Kurashova, Irina, Halevy, Itay, Kamyshny, Alexey

“…Rates of thiocyanate degradation were measured in waters and sediments of marine and limnic systems under various redox conditions, oxic, anoxic (nonsulfidic,…”
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Intermediate sulfur oxidation state compounds in the euxinic surface sediments of the Dvurechenskii mud volcano (Black Sea) by Lichtschlag, Anna, Kamyshny, Alexey, Ferdelman, Timothy G., deBeer, Dirk

“…The deep Black Sea is known to be depleted in electron-acceptors for sulfide oxidation. This study on depth distributions of sulfur species (S(II), S(0), Sn2-,…”
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Kinetics and mechanism of polysulfides and elemental sulfur formation by a reaction between hydrogen sulfide and δ-MnO2 by Avetisyan, Khoren, Zweig, Irina, Luther, George W., Kamyshny, Alexey

“…Formation rates for various products of hydrogen sulfide oxidation by δ-MnO2 were studied as a function of pH, temperature, concentration of the reactants, and…”
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Multiple sulfur isotopes fractionations associated with abiotic sulfur transformations in Yellowstone National Park geothermal springs by Kamyshny, Alexey, Druschel, Gregory, Mansaray, Zahra F, Farquhar, James

“…Background The paper presents a quantification of main (hydrogen sulfide and sulfate), as well as of intermediate sulfur species (zero-valent sulfur (ZVS),…”
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Method for the Determination of Inorganic Polysulfide Distribution in Aquatic Systems by Kamyshny, Alexey, Ekeltchik, Irina, Gun, Jenny, Lev, Ovadia

“…Inorganic polysulfides have significant technological importance, and their environmental role is gradually being unraveled. But despite their importance,…”
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Biogeochemical sulfur transformations in the cohesive and permeable tidal flat sediments of Jade Bay (North Sea) by Kamyshny, Alexey, Sela, Debora, Klein, Rotem, Turchyn, Alexandra V., Antler, Gilad, Freund, Holger

“…Intertidal flats are highly productive coastal marine ecosystems which are affected by fast changes in environmental conditions and host dynamic biogeochemical…”
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