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  1. Content type: Research article

    Cu and Zn have naturally occurring non radioactive isotopes, and their isotopic systematics in a biological context are poorly understood. In this study we used double focussing mass spectroscopy to determine ...

    Authors: Anette Büchl, Chris J Hawkesworth, K Vala Ragnarsdottir and David R Brown

    Citation: Geochemical Transactions 2008 9:11

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  2. Content type: Research article

    The application of surface complexation models (SCMs) to natural sediments and soils is hindered by a lack of consistent models and data for large suites of metals and minerals of interest. Furthermore, the su...

    Authors: Tracy J Lund, Carla M Koretsky, Christopher J Landry, Melinda S Schaller and Soumya Das

    Citation: Geochemical Transactions 2008 9:9

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  3. Content type: Research article

    Molybdenum disulfide (MoS2), a layered transition-metal dichalcogenide, has been of special importance to the research community of geochemistry, materials and environmental chemistry, and geotechnical engineerin...

    Authors: CV Ramana, U Becker, V Shutthanandan and CM Julien

    Citation: Geochemical Transactions 2008 9:8

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  4. Content type: Research article

    Productivity in the Southern Oceans is iron-limited, and the supply of iron dissolved from aeolian dust is believed to be the main source from outside the marine reservoir. Glacial sediment sources of iron hav...

    Authors: Rob Raiswell, Liane G Benning, Martyn Tranter and Slawek Tulaczyk

    Citation: Geochemical Transactions 2008 9:7

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  5. Content type: Research article

    The speciation of dissolved sulfide in the water immediately surrounding deep-ocean hydrothermal vents is critical to chemoautotrophic organisms that are the primary producers of these ecosystems. The objectiv...

    Authors: Heileen Hsu-Kim, Katherine M Mullaugh, Jeffrey J Tsang, Mustafa Yucel and George W Luther III

    Citation: Geochemical Transactions 2008 9:6

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  6. Content type: Research article

    Experiments with dinitrogen-, nitrite-, nitrate-containing solutions were conducted without headspace in Ti reactors (200°C), borosilicate septum bottles (70°C) and HDPE tubes (22°C) in the presence of Fe and ...

    Authors: Alexander Smirnov, Douglas Hausner, Richard Laffers, Daniel R Strongin and Martin AA Schoonen

    Citation: Geochemical Transactions 2008 9:5

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  7. Content type: Research article

    Terpenoid resin is produced by all families and most genera of the order Coniferales (the conifers), and the distribution of terpenes present in most conifer resins is characteristic of the originating family....

    Authors: P Sargent Bray and Ken B Anderson

    Citation: Geochemical Transactions 2008 9:3

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  8. Content type: Research article

    Strontium sorption to amorphous silica and goethite was measured as a function of pH and dissolved strontium and carbonate concentrations at 25°C. Strontium sorption gradually increases from 0 to 100% from pH ...

    Authors: Susan A Carroll, Sarah K Roberts, Louise J Criscenti and Peggy A O'Day

    Citation: Geochemical Transactions 2008 9:2

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  9. Content type: Research article

    The origin of the spatial variability of dissolved As concentrations in shallow aquifers of the Bengal Basin remains poorly understood. To address this, we compare here transects of simultaneously-collected gr...

    Authors: Jerome Métral, Laurent Charlet, Sara Bureau, Sukumar Basu Mallik, Sudipta Chakraborty, Kazi M Ahmed, MW Rahman, Zhongqi Cheng and Alexander van Geen

    Citation: Geochemical Transactions 2008 9:1

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  10. Content type: Research article

    Forms of selenium in bituminous coal, anthracite, and cokeite (natural coke) from Huaibei Coalfield, Anhui, China, have been determined by sequential solvent extraction. The selenium content in bulk samples is...

    Authors: Ying Zhang, Guijian Liu, Chen-Lin Chou, Lei Wang and Yu Kang

    Citation: Geochemical Transactions 2007 8:14

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  11. Content type: Research article

    This study provides experimental evidence for biologically induced precipitation of magnesium carbonates, specifically dypingite (Mg5(CO3)4(OH)2·5H2O), by cyanobacteria from an alkaline wetland near Atlin, Britis...

    Authors: Ian M Power, Siobhan A Wilson, James M Thom, Gregory M Dipple and Gordon Southam

    Citation: Geochemical Transactions 2007 8:13

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  12. Content type: Research article

    High levels of arsenic in groundwater and drinking water are a major health problem. Although the processes controlling the release of As are still not well known, the reductive dissolution of As-rich Fe oxyhy...

    Authors: André Burnol, Francis Garrido, Philippe Baranger, Catherine Joulian, Marie-Christine Dictor, Françoise Bodénan, Guillaume Morin and Laurent Charlet

    Citation: Geochemical Transactions 2007 8:12

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  13. Content type: Research article

    Fluid inclusions and geological relationships indicate that rodingite formation in the Asbestos ophiolite, Québec, occurred in two, or possibly three, separate episodes during thrusting of the ophiolite onto t...

    Authors: Charles Normand and Anthony E Williams-Jones

    Citation: Geochemical Transactions 2007 8:11

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  14. Content type: Research article

    Sediments recovered from the flooded mine workings of the Penn Mine, a Cu-Zn mine abandoned since the early 1960s, were cultured for anaerobic bacteria over a range of pH (4.0 to 7.5). The molecular biology of...

    Authors: Clinton D Church, Richard T Wilkin, Charles N Alpers, Robert O Rye and R Blaine McCleskey

    Citation: Geochemical Transactions 2007 8:10

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  15. Content type: Methodology

    Standardized sample preparation techniques allow comparison of pyrite dissolution experiments under diverse conditions. Our objective was to assess dry and wet sieving preparation methodologies, and to develop...

    Authors: Amy L Wolfe, Ran Liu, Brian W Stewart, Rosemary C Capo and David A Dzombak

    Citation: Geochemical Transactions 2007 8:9

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  16. Content type: Research article

    A profile across 8 layers from a fossil travertine terrace from a low temperature geothermal spring located in Svalbard, Norway has been studied using both Raman spectroscopy and SEM (Scanning Electron Microsc...

    Authors: Susana E Jorge-Villar, Liane G Benning and Howell GM Edwards

    Citation: Geochemical Transactions 2007 8:8

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  17. Content type: Research article

    Early diagenetic processes involved in natural organic matter (NOM) oxidation in marine sediments have been for the most part characterized after collecting sediment cores and extracting porewaters. These tech...

    Authors: Martial Taillefert, Stephanie Neuhuber and Gwendolyn Bristow

    Citation: Geochemical Transactions 2007 8:6

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  18. Content type: Research article

    We report on a continuous-measurement campaign carried out in Vulcano (Aeolian islands, Sicily), devoted to the simultaneous monitoring of CO2 and H2O concentrations. The measurements were performed with an absor...

    Authors: Maurizio De Rosa, Gianluca Gagliardi, Alessandra Rocco, Renato Somma, Paolo De Natale and Giuseppe De Natale

    Citation: Geochemical Transactions 2007 8:5

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  19. Content type: Research article

    The effects of soil minerals on chromate (CrVIO42-, noted as Cr(VI)) reduction by sulfide were investigated in the pH range of 7.67 to 9.07 under the anoxic condition. The examined minerals included montmorilloni...

    Authors: Yeqing Lan, Baolin Deng, Chulsung Kim and Edward C Thornton

    Citation: Geochemical Transactions 2007 8:4

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  20. Content type: Research article

    A magnetic signature of tree rings was tested as a potential paleo-climatic indicator. We examined wood from sequoia tree, located in Mountain Home State Forest, California, whose tree ring record spans over t...

    Authors: Gunther Kletetschka, Petr Pruner, Daniela Venhodova and Jaroslav Kadlec

    Citation: Geochemical Transactions 2007 8:2

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  21. Content type: Research article

    Seasonal changes in pore water and sediment redox geochemistry have been observed in many near-surface sediments. Such changes have the potential to strongly influence trace metal distribution and thus create ...

    Authors: Carla M Koretsky, Johnson R Haas, Douglas Miller and Noah T Ndenga

    Citation: Geochemical Transactions 2006 7:11

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  22. Content type: Research article

    Samples of vitrified and unvitrified Eocene woody plant tissues collected from the Fossil Forest site, Geodetic Hills, Axel Heiberg Island, have been characterized by TMAH thermochemolysis. All samples are gym...

    Authors: Paul E Kaelin, William W Huggett and Ken B Anderson

    Citation: Geochemical Transactions 2006 7:9

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  23. Content type: Research article

    The chemolithoautotrophic bacterium, Acidithiobacillus ferrooxidans, commonly occurs in acid mine drainage (AMD) environments where it is responsible for catalyzing the oxidation of pyrite and concomitant develop...

    Authors: Jun Hao, Curtis Cleveland, Eelin Lim, Daniel R Strongin and Martin AA Schoonen

    Citation: Geochemical Transactions 2006 7:8

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  24. Content type: Review

    Seawater is constantly circulating through oceanic basement as a low-temperature hydrothermal fluid (<150°C). In cases when ultramafic rocks are exposed to the fluids, for instance during the initial phase of ...

    Authors: Nils G Holm, Marion Dumont, Magnus Ivarsson and Cécile Konn

    Citation: Geochemical Transactions 2006 7:7

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  25. Content type: Research article

    In this study, a series of interaction coefficients of the Brønsted-Guggenheim-Scatchard specific interaction theory (SIT) have been estimated up to 200°C and 400 bars. The interaction coefficients involving Cl- ...

    Authors: Yongliang Xiong

    Citation: Geochemical Transactions 2006 7:4

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  26. Content type: Research article

    Pyrite, the most abundant metal sulphide on Earth, is known to spontaneously form hydrogen peroxide when exposed to water. In this study the hypothesis that pyrite-induced hydrogen peroxide is transformed to h...

    Authors: Corey A Cohn, Steffen Mueller, Eckard Wimmer, Nicole Leifer, Steven Greenbaum, Daniel R Strongin and Martin AA Schoonen

    Citation: Geochemical Transactions 2006 7:3

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  27. Content type: Research article

    Upper Cretaceous amber from the Raritan Formation (Sayerville, New Jersey) has been investigated by Pyrolysis-GC-MS and Pyrolysis-GC-matrix isolation FTIR-MS. Results establish the existence of two distinct fo...

    Authors: Ken B Anderson

    Citation: Geochemical Transactions 2006 7:2

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  28. Content type: Research article

    The results of experiments designed to test the hypothesis that near-surface molecular structure of iron oxide minerals influences adhesion of dissimilatory iron reducing bacteria are presented. These experime...

    Authors: Andrew L Neal, Tracy L Bank, Michael F Hochella Jr and Kevin M Rosso

    Citation: Geochemical Transactions 2005 6:77

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  29. Content type: Research article

    Experimental batch and miscible-flow cultures were studied in order to determine the mechanistic pathways of microbial Fe(III) respiration in ferruginous smectite clay, NAu-1. The primary purpose was to resolv...

    Authors: S Erin O'Reilly, Janet Watkins and Yoko Furukawa

    Citation: Geochemical Transactions 2005 6:67

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  30. Content type: Article

    A synthetic Topopah Spring Tuff water representative of one type of pore water at Yucca Mountain, NV was evaporated at 95°C in a series of experiments to determine the geochemical controls for brines that may ...

    Authors: Maureen Alai, Mark Sutton and Susan Carroll

    Citation: Geochemical Transactions 2005 6:31

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  31. Content type: Research article

    We conducted reversed deliquescence experiments in saturated NaCl–NaNO3–H2O, KNO3–NaNO3–H2O, and NaCl–KNO3–H2O systems from 90 to 120°C as a function of relative humidity and solution composition. NaCl, NaNO3, an...

    Authors: Susan Carroll, Laura Craig and Thomas J Wolery

    Citation: Geochemical Transactions 2005 6:19

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  32. Content type: Article

    Mining activities in the US Western Phosphate Resource Area (WPRA) have released Se into the environment. Selenium has several different oxidation states and species, each having varying degrees of solubility,...

    Authors: Amy L Ryser, Daniel G Strawn, Matthew A Marcus, Jodi L Johnson-Maynard, Mickey E Gunter and Gregory Möller

    Citation: Geochemical Transactions 2005 6:1

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  33. Content type: Article

    Backfills of dredged sediments onto a former sand and gravel mine site in Charles City County, VA may have the potential to contaminate local groundwater. To evaluate the mobility of trace elements and to iden...

    Authors: Jianwu Tang, G Richard Whittecar, Karen H Johannesson and W Lee Daniels

    Citation: Geochemical Transactions 2004 5:49

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  34. Content type: Article

    The Richmond Mine at Iron Mountain, Shasta County, California, USA provides an excellent opportunity to study the chemical and biological controls on acid mine drainage (AMD) generation in situ, and to identify k...

    Authors: Gregory K Druschel, Brett J Baker, Thomas M Gihring and Jillian F Banfield

    Citation: Geochemical Transactions 2004 5:13

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  35. Content type: Research article

    The reactivity of a mineral surface is determined by the variety and population of different types of surface sites (e.g., step, kink, adatom, and defect sites). The concept of "adsorbed nutrient" has been bui...

    Authors: Carrick M. Eggleston, Andrew G. Stack, Kevin M. Rosso and Angela M. Bice

    Citation: Geochemical Transactions 2004 5:33

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