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  1. The oxidative dissolution of sulfide minerals, such as arsenopyrite (FeAsS), is of critical importance in many geochemical systems. A comprehensive understanding of their dissolution rates entails careful prep...

    Authors: Hariprasad Parthasarathy, John P Baltrus, David A Dzombak and Athanasios K Karamalidis

    Citation: Geochemical Transactions 2014 15:14

    Content type: Methodology

    Published on:

  2. Ionic and molecular carriers of dissolved (filter-passing) zero-valent sulfur (S0) in anaerobic natural waters include polysulfides, Sn2−, molecular S8(aq), organic macromolecules and certain higher valent thioan...

    Authors: George R Helz

    Citation: Geochemical Transactions 2014 15:13

    Content type: Research article

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  3. Shallow-sea (5 m depth) hydrothermal venting off Milos Island provides an ideal opportunity to target transitions between igneous abiogenic sulfide inputs and biogenic sulfide production during microbial sulfa...

    Authors: William P Gilhooly, David A Fike, Gregory K Druschel, Fotios-Christos A Kafantaris, Roy E Price and Jan P Amend

    Citation: Geochemical Transactions 2014 15:12

    Content type: Research article

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  4. Elemental sulfur exists is a variety of forms in natural systems, from dissolved forms (noted as S8(diss) or in water as S8(aq)) to bulk elemental sulfur (most stable as α-S8). Elemental sulfur can form via sever...

    Authors: Angel A Garcia and Gregory K Druschel

    Citation: Geochemical Transactions 2014 15:11

    Content type: Research article

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  5. We have studied the impact of dissolved aluminum on interfacial properties of two aluminum bearing minerals, corundum and kaolinite. The effect of intentionally adding dissolved aluminum on electrokinetic pote...

    Authors: Johannes Lützenkirchen, Ahmed Abdelmonem, Rohan Weerasooriya, Frank Heberling, Volker Metz and Remi Marsac

    Citation: Geochemical Transactions 2014 15:9

    Content type: Research article

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  6. The paper presents a quantification of main (hydrogen sulfide and sulfate), as well as of intermediate sulfur species (zero-valent sulfur (ZVS), thiosulfate, sulfite, thiocyanate) in the Yellowstone National P...

    Authors: Alexey Kamyshny Jr, Gregory Druschel, Zahra F Mansaray and James Farquhar

    Citation: Geochemical Transactions 2014 15:7

    Content type: Research article

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  7. Iron oxyhydroxides are commonly found in natural aqueous systems as nanoscale particles, where they can act as effective sorbents for dissolved metals due to their natural surface reactivity, small size and hi...

    Authors: Rebecca B Chesne and Christopher S Kim

    Citation: Geochemical Transactions 2014 15:6

    Content type: Research article

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    The Erratum to this article has been published in Geochemical Transactions 2015 16:17

  8. This paper is based on the studies of the biogeochemical structure of the water column in the anoxic Fjord Hunnbunn (south-eastern Norway) performed in 2009, 2011 and 2012. This Fjord is an enclosed basin of b...

    Authors: Svetlana Pakhomova, Hans Fredrik Veiteberg Braaten, Evgeniy Yakushev and Jens Skei

    Citation: Geochemical Transactions 2014 15:5

    Content type: Research article

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  9. The use of a boiling mixture of hydriodic acid, hypophosphorous acid, and hydrochloric acid to reduce any variety of sulfur compounds has been in use in various applications since the first appearance of this ...

    Authors: Gail L Arnold, Benjamin Brunner, Inigo A Müller and Hans Røy

    Citation: Geochemical Transactions 2014 15:4

    Content type: Methodology

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  10. The Black Sea is the largest euxinic basin on the Earth. The anoxic zone consists of the upper part water mass stratified by density, and the lower water mass homogenized relative to density (depth >1750 m), n...

    Authors: Alexander V Dubinin, Elena O Dubinina, Tatyana P Demidova, Nataliya M Kokryatskaya, Maria N Rimskaya-Korsakova, Sofia A Kosova and Evgeniy V Yakushev

    Citation: Geochemical Transactions 2014 15:3

    Content type: Research article

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  11. Coastal sediments in the northern Gulf of Mexico have a high potential of being contaminated by petroleum hydrocarbons, such as polycyclic aromatic hydrocarbons (PAHs), due to extensive petroleum exploration a...

    Authors: Zucheng Wang, Zhanfei Liu, Kehui Xu, Lawrence M Mayer, Zulin Zhang, Alexander S Kolker and Wei Wu

    Citation: Geochemical Transactions 2014 15:2

    Content type: Research article

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  12. Riverine particles undergo a rapid transformation when they reach estuaries. The rapid succession of hydrodynamic and biogeochemical regimes forces the particles to flocculate, settle and enter the sediment po...

    Authors: Yoko Furukawa, Allen H Reed and Guoping Zhang

    Citation: Geochemical Transactions 2014 15:1

    Content type: Research article

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  13. Methane in source rocks may not exist exclusively as free gas. It could exist in equilibrium with carbon and higher hydrocarbons: CH4 + C < = > Hydrocarbon. Three lines of evidence support this possibility. 1) Sh...

    Authors: Frank D Mango

    Citation: Geochemical Transactions 2013 14:5

    Content type: Research article

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  14. Oil biodegradation by native bacteria is one of the most important natural processes that can attenuate the environmental impacts of marine oil spills. Existing models for oil biodegradation kinetics are mostl...

    Authors: Javier Vilcáez, Li Li and Susan S Hubbard

    Citation: Geochemical Transactions 2013 14:4

    Content type: Research article

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  15. We investigated the surface characteristics of two strains of Shewanella sp., S. oneidensis MR-1 and S. putrefaciens 200, that were grown under aerobic conditions as well as under anaerobic conditions with trimet...

    Authors: Yoko Furukawa and Jason R Dale

    Citation: Geochemical Transactions 2013 14:3

    Content type: Research article

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  16. The widespread use of jarosite-type compounds to eliminate impurities in the hydrometallurgical industry is due to their capability to incorporate several elements into their structures. Some of these elements...

    Authors: Francisco Patiño, Mizraim U Flores, Iván A Reyes, Martín Reyes, Juan Hernández, Isauro Rivera and Julio C Juárez

    Citation: Geochemical Transactions 2013 14:2

    Content type: Research article

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  17. Previously described methods to separate dissolved U(IV) from dissolved U(VI) under acidic anoxic conditions prior to laboratory analysis were ineffective with materials currently available commercially. Three...

    Authors: Deborah L Stoliker, Nazila Kaviani, Douglas B Kent and James A Davis

    Citation: Geochemical Transactions 2013 14:1

    Content type: Methodology

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  18. The analysis of the dissolved organic fraction of hydrothermal fluids has been considered a real challenge due to sampling difficulties, complexity of the matrix, numerous interferences and the assumed ppb con...

    Authors: Cecile Konn, Jean-Luc Charlou, Jean-Pierre Donval and Nils G Holm

    Citation: Geochemical Transactions 2012 13:8

    Content type: Research article

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  19. The colonization of the terrestrial environment by land plants transformed the planetary surface and its biota, and shifted the balance of Earth’s biomass from the subsurface towards the surface. However there...

    Authors: John Parnell and Sorcha Foster

    Citation: Geochemical Transactions 2012 13:7

    Content type: Research article

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  20. Although uniquely capable of measuring multiple redox constituents nearly simultaneously with no or minimal sample pretreatment, voltammetry is currently underutilized in characterizing redox conditions in aqu...

    Authors: Aaron J Slowey and Mark Marvin-DiPasquale

    Citation: Geochemical Transactions 2012 13:6

    Content type: Methodology

    Published on:

  21. Continental flood basalts (CFB) are considered as potential CO2 storage sites because of their high reactivity and abundant divalent metal ions that can potentially trap carbon for geological timescales. Moreover...

    Authors: Thi Hai Van Pham, Per Aagaard and Helge Hellevang

    Citation: Geochemical Transactions 2012 13:5

    Content type: Research article

    Published on:

  22. Reactive oxygen species (ROS) are vital regulators of many cellular functions in the body. The intracellular ROS concentration is highly regulated by a balance between pro-oxidants and anti-oxidants. A chronic...

    Authors: Andrea D Harrington, Stella E Tsirka and Martin AA Schoonen

    Citation: Geochemical Transactions 2012 13:4

    Content type: Methodology

    Published on:

  23. The East Pacific Rise (EPR) at 9°50'N hosts a hydrothermal vent field (Bio9) where the change in fluid chemistry is believed to have caused the demise of a tubeworm colony. We test this hypothesis and expand o...

    Authors: Michael Hentscher and Wolfgang Bach

    Citation: Geochemical Transactions 2012 13:2

    Content type: Research article

    Published on:

  24. A proposed strategy for immobilizing trace metals in the subsurface is to stimulate calcium carbonate precipitation and incorporate contaminants by co-precipitation. Such an approach will require injecting che...

    Authors: Tsigabu A Gebrehiwet, George D Redden, Yoshiko Fujita, Mikala S Beig and Robert W Smith

    Citation: Geochemical Transactions 2012 13:1

    Content type: Research article

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  25. Ureolytically-driven calcium carbonate precipitation is the basis for a promising in-situ remediation method for sequestration of divalent radionuclide and trace metal ions. It has also been proposed for use i...

    Authors: Yuxin Wu, Jonathan B Ajo-Franklin, Nicolas Spycher, Susan S Hubbard, Guoxiang Zhang, Kenneth H Williams, Joanna Taylor, Yoshiko Fujita and Robert Smith

    Citation: Geochemical Transactions 2011 12:7

    Content type: Research article

    Published on:

  26. Hydrocarbons such as CH4 are known to be formed through the Fischer-Tropsch or Sabatier type reactions in hydrothermal systems usually at temperatures above 100°C. Weathering of olivine is sometimes suggested to ...

    Authors: Anna Neubeck, Nguyen Thanh Duc, David Bastviken, Patrick Crill and Nils G Holm

    Citation: Geochemical Transactions 2011 12:6

    Content type: Research article

    Published on:

  27. Chromite is a mineral with low solubility and is thus resistant to dissolution. The exception is when manganese oxides are available, since they are the only known naturally occurring oxidants for chromite. In...

    Authors: Magnus Ivarsson, Curt Broman and Nils G Holm

    Citation: Geochemical Transactions 2011 12:5

    Content type: Research article

    Published on:

  28. One of the key-principles of the iron-sulphur world theory is to bring organic molecules close enough to interact with each other, using the surface of pyrite as a substrate in a hydrothermal setting. The pres...

    Authors: Paula Lindgren, John Parnell, Nils G Holm and Curt Broman

    Citation: Geochemical Transactions 2011 12:3

    Content type: Research article

    Published on:

  29. The isolation of highly pure copper-free methanobactin is a prerequisite for the investigation of the biogeochemical functions of this chalkophore molecule produced by methane oxidizing bacteria. Here, we repo...

    Authors: Marie-Laure Pesch, Iso Christl, Kurt Barmettler, Stephan M Kraemer and Ruben Kretzschmar

    Citation: Geochemical Transactions 2011 12:2

    Content type: Methodology

    Published on:

  30. A realistic estimation of the health risk of human exposure to solid-phase arsenic (As) derived from historic mining operations is a major challenge to redevelopment of California's famed "Mother Lode" region....

    Authors: Andrea L Foster, Roger P Ashley and James J Rytuba

    Citation: Geochemical Transactions 2011 12:1

    Content type: Research article

    Published on:

  31. The spatio-temporal variations of soil gas in the seismic fault zone produced by the 12 May 2008 Wenchuan Ms 8.0 earthquake were investigated based on the field measurements of soil gas concentrations after the m...

    Authors: Xiaocheng Zhou, Jianguo Du, Zhi Chen, Jianwu Cheng, Yi Tang, Liming Yang, Chao Xie, Yueju Cui, Lei Liu, Li Yi, Panxin Yang and Ying Li

    Citation: Geochemical Transactions 2010 11:5

    Content type: Research article

    Published on:

  32. In aerodynamic levitation, solids and liquids are floated in a vertical gas stream. In combination with CO2-laser heating, containerless melting at high temperature of oxides and silicates is possible. We apply a...

    Authors: Andreas Pack, Katrina Kremer, Nina Albrecht, Klaus Simon and Andreas Kronz

    Citation: Geochemical Transactions 2010 11:4

    Content type: Methodology

    Published on:

  33. Cellular exposure to particulate matter with concomitant formation of reactive oxygen species (ROS) and oxidization of biomolecules may lead to negative health outcomes. Evaluating the particle-induced formati...

    Authors: Corey A Cohn, Shawn C Fisher, Bruce J Brownawell and Martin AA Schoonen

    Citation: Geochemical Transactions 2010 11:2

    Content type: Research article

    Published on:

  34. The polycyclic aromatic hydrocarbon (PAH) contamination of urban, agricultural and forest soil samples was investigated from samples obtained in the surroundings of Valasske Mezirici. Valasske Mezirici is a to...

    Authors: Daniela Plachá, Helena Raclavská, Dalibor Matýsek and Mark H Rümmeli

    Citation: Geochemical Transactions 2009 10:12

    Content type: Research article

    Published on:

  35. This study investigates the generation of HCl and other acid gases from boiling calcium chloride dominated waters at atmospheric pressure, primarily using numerical modeling. The main focus of this investigati...

    Authors: Guoxiang Zhang, Nicolas Spycher, Eric Sonnenthal and Carl Steefel

    Citation: Geochemical Transactions 2009 10:11

    Content type: Research article

    Published on:

  36. Given the importance of highly reactive oxygen species (hROS) as reactants in a wide range of biological, photochemical, and environmental systems there is an interest in detection and quantification of these ...

    Authors: Corey A Cohn, Christopher E Pedigo, Shavonne N Hylton, Sanford R Simon and Martin AA Schoonen

    Citation: Geochemical Transactions 2009 10:8

    Content type: Methodology

    Published on:

  37. Lateral Force Microscopy (LFM) studies were carried out on cleaved calcite sections in contact with solutions supersaturated with respect to otavite (CdCO3) or calcite-otavite solid solutions (SS) as a means to e...

    Authors: Pablo Cubillas and Steven R Higgins

    Citation: Geochemical Transactions 2009 10:7

    Content type: Methodology

    Published on:

  38. Siderophore-promoted iron acquisition by microorganisms usually occurs in the presence of other organic molecules, including biosurfactants. We have investigated the influence of the anionic surfactant sodium ...

    Authors: Naraya Carrasco, Ruben Kretzschmar, Jide Xu and Stephan M Kraemer

    Citation: Geochemical Transactions 2009 10:5

    Content type: Research article

    Published on:

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