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  1. 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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  2. 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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  3. 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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  4. Content type: Paper

    Rhizophora mangle L. (red mangrove) is the dominant species of mangrove in the Americas. At Twin Cays, Belize (BZ) red mangroves are present in a variety of stand structures (tall >5 m in height, transition ~2–4 ...

    Authors: Barbara J Smallwood, Matthew J Wooller, Myrna E Jacobson and Marilyn L Fogel

    Citation: Geochemical Transactions 2003 4:38

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  5. Content type: Paper

    The effect of a diacetylene-containing phospholipid on the oxidation of pyrite, FeS2, was investigated. Earlier work reported by our research group showed that the adsorption of l,2-bis(10,12-tricosadiynoyl)-sn-g...

    Authors: Xiang Zhang, Michael J Borda, Martin AA Schoonen and Daniel R Strongin

    Citation: Geochemical Transactions 2003 4:8

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  6. Content type: Review

    Phase transformation and crystal growth in nanoparticles may happen via mechanisms distinct from those in bulk materials. We combine experimental studies of as-synthesized and hydrothermally coarsened titania (Ti...

    Authors: Benjamin Gilbert, Hengzhong Zhang, Feng Huang, Michael P Finnegan, Glenn A Waychunas and Jillian F Banfield

    Citation: Geochemical Transactions 2003 4:20

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  7. Content type: Paper

    A sampling protocol for the retention, extraction, and analysis of sulfoxyanions in hydrothermal waters has been developed in the laboratory and tested at Yellowstone National Park and Green Lake, NY. Initial ...

    Authors: Greg K Druschel, Martin AA Schoonen, D Kirk Nordstrom, James W Ball, Yong Xu and Corey A Cohn

    Citation: Geochemical Transactions 2003 4:12

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  8. Content type: Article

    Formation constants for thioarsenite species have been determined in dilute solutions at 25°C, ΣH2S from 10-7.5 to 10-3.0 M, ΣAs from 10-5.6 to 10-4.8 M, and pH 7 and 10. The principal inorganic arsenic species i...

    Authors: Richard T Wilkin, Dirk Wallschläger and Robert G Ford

    Citation: Geochemical Transactions 2003 4:1

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  9. Content type: Article

    Highly concentrated NaCl brines are important geothermal fluids; chloride complexation of metals in such brines increases the solubility of minerals and plays a fundamental role in the genesis of hydrothermal ...

    Authors: David M. Sherman and Matthew D. Collings

    Citation: Geochemical Transactions 2002 3:102

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  10. Content type: Article

    We have identified important chemical reactions that control the fate of metal-contaminated estuarine sediments if they are left undisturbed (in situ) or if they are dredged. We combined information on the molecu...

    Authors: Susan Carroll, Peggy A. O'Day, Brad Esser and Simon Randall

    Citation: Geochemical Transactions 2002 3:81

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  11. Content type: Article

    It is well established through field observations, experiments, and chemical models that oxidation (redox) state and pH exert a strong influence on the speciation of dissolved components and the solubility of ...

    Authors: Thomas H. Giordano

    Citation: Geochemical Transactions 2002 3:56

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  12. Content type: Article

    δ13C values of crop and forest soils were measured 8 years after disposal of paper sewage sludge. The carbon transfer from paper sludge downward to the first humic layer is evidenced by a 13C-enrichnient of up to...

    Authors: Eric Lichtfouse, Karyne Rogers, Cécile Payet and Jean-Christophe Renat

    Citation: Geochemical Transactions 2002 3:48

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  13. Content type: Article

    A procedure was developed for the determination of element distributions in cross-sections of ferromanganese concretions using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). The effec...

    Authors: Mikael D. Axelsson, Ilia Rodushkin, Douglas C. Baxter, Johan Ingri and Björn Öhlander

    Citation: Geochemical Transactions 2002 3:40

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  14. Content type: Article

    To understand the aqueous species important for transport of rhenium under supercritical conditions, we conducted a series of solubility experiments on the Re–ReO2 buffer assemblage and ReS2. In these experiments...

    Authors: Yongliang Xiong and Scott A. Wood

    Citation: Geochemical Transactions 2002 3:1

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  15. Content type: Article

    Bottom trawling causes physical disturbance to sediments particularly in shelf areas. The disturbance due to trawling is most significant in deeper areas with softer sediments where levels of natural disturban...

    Authors: Daniel E Duplisea, Simon Jennings, Stephen J Malcolm, Ruth Parker and David B Sivyer

    Citation: Geochemical Transactions 2001 2:112

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  16. Content type: Article

    We report electrochemical profiles from unvegetated surficial sediments of a Georgia salt marsh. In creek bank sediments, the absence of ΣH2S or FeSaq and the presence of Fe(III)–organic complexes suggest that Mn...

    Authors: David C Bull and Martial Taillefert

    Citation: Geochemical Transactions 2001 2:104

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  17. Content type: Article

    Most wetted surfaces that are illuminated support a population of phototrophs. The marine sediment is no exception and there the major component of the microphytobenthic population is diatoms. These organisms ...

    Authors: Barbara Wigglesworth-Cooksey, Deborah Berglund and Keith E Cooksey

    Citation: Geochemical Transactions 2001 2:75

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  18. Content type: Article

    We discuss the voltammetric methods that are used to assess metal–organic complexation in seawater. These consist of titration methods using anodic stripping voltammetry (ASV) and cathodic stripping voltammetr...

    Authors: George W Luther III, Timothy F Rozan, Amy Witter and Brent Lewis

    Citation: Geochemical Transactions 2001 2:65

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  19. Content type: Article

    The form or speciation of a metal in natural waters can change its kinetic and thermodynamic properties. For example, Cu(II) in the free ionic form is toxic to phytoplankton, while copper complexed to organic ...

    Authors: Frank Millero

    Citation: Geochemical Transactions 2001 2:57

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  20. Content type: Article

    Deposits of Fe-Si-Mn oxyhydroxides are commonly found on the seafloor on seamounts and mid-ocean spreading centers. At Franklin Seamount located near the western extremity of Woodlark Basin, Papua New Guinea, ...

    Authors: TD Boyd and SD Scott

    Citation: Geochemical Transactions 2001 2:45

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  21. Content type: Methodology

    An automatic system for the continuous monitoring of CO2, H2S, SO2 and meteorological parameters in atmosphere has been developed. The system has been tested in the laboratory in order to verify the stability and...

    Authors: B Badalamenti, M Liotta and M Valenza

    Citation: Geochemical Transactions 2001 2:30

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  22. Content type: Article

    The elemental sulfur formed at the arsenopyrite surface after oxidation by ferric iron was quantitatively measured by extraction in perchloroethylene and subsequent quantitative analysis by HPLC. Reactions wit...

    Authors: Molly M McGuire, Jillian F Banfield and Robert J Hamers

    Citation: Geochemical Transactions 2001 2:25

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  23. Content type: Article

    The ability of six humic acids (HAs) to form pseudomicellar structures in aqueous solution was evaluated by five techniques: size exclusion chromatography; pyrene fluorescence enhancement; the pyrene I1/I3 ratio;...

    Authors: Christi Young and Ray von Wandruszka

    Citation: Geochemical Transactions 2001 2:16

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  24. Content type: Article

    An understanding of the size of petroleum secondary migration systems is vital for successful exploration for petroleum reserves. Geochemists have suggested that compositional fractionation of petroleum accomp...

    Authors: Steve Larter, Berni Bowler, Ed Clarke, Colin Wilson, Brian Moffatt, Barry Bennett, Gareth Yardley and Dan Carruthers

    Citation: Geochemical Transactions 2000 1:54

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  25. Content type: Article

    As part of a larger study of the structure and behavior of polyterpenoids in sedimentary systems, the structural characteristics of the macromolecular constituents of Dammar resin and a related Class II amber ...

    Authors: Ken B. Anderson and John V. Muntean

    Citation: Geochemical Transactions 2000 1:1

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