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Resolving and modeling the effects of Fe and Mn redox cycling on trace metal behaviour in a seasonally anoxic lake.

By J. Hamilton-Taylor, E.J. Smith, W. Davison and M. Sugiyama

Abstract

Vertical profiles of the dissolved and particulate (>0.45 μm) concentrations of Fe, Mn, Co, Ni, Cu, Pb, Al and Ba were determined on two occasions (14 and 22 August 1996) during summer stratification in a seasonally anoxic lake (Esthwaite Water, UK). The results were combined with contemporaneous in-situ measurements of water-column remobilization of the metals from settling particles at the base of the suboxic zone and other ancillary measurements. The combined data were interpreted with the aid of an equilibrium speciation model (WHAM6), incorporating metalhumic interactions and a surface-complexation description of binding to Fe and Mn oxides. The behavior of all the metals was related in different ways to the position of the O2-H2S interface and to Fe and Mn redox cycling. In the region of the O2-H2S interface the behavior of Co and to a lesser degree Ni was dominated by Mn redox cycling. Ba behavior was dominated by the biogenic precipitation and dissolution of barite and to a lesser degree by Mn redox cycling. The behavior of Al was linked to both Mn and Fe redox cycling, although the extent of binding to the oxides and to humic substances was poised with respect to pH. Unlike the other metals, the profiles of Pb and Cu showed little variation above the dissolved sulfide maximum, but modeling indicated that binding of Pb was significant to both Mn and Fe oxides. The featureless nature of the Cu profiles in the upper part of the water column was linked to its overriding association with dissolved humic substances. Below the dissolved sulfide maximum, Co, Ni, Ba, Cu, Pb and Mn were all affected by sulfide precipitation, probably through a common association with FeS. In the case of Co, Ni, Cu and Pb, inverse relationships between the measured dissolved and particulate concentrations were attributed to the coexistence of both filterable and nonfilterable FeS particles and associated mass balance effects. The observed behavior of the metals in relation to the role played by Fe and Mn oxides was generally consistent with WHAM6 predictions. The model predictions highlighted the fact that trace metal speciation in general, and binding to Mn and Fe oxides in particular, can be highly sensitive to the variations in solution conditions found in freshwater systems

Year: 2005
OAI identifier: oai:eprints.lancs.ac.uk:92
Provided by: Lancaster E-Prints

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Citations

  1. (1995). 210Pb and stable lead through the redox transition zone of an Antarctic lake. doi
  2. (1990). 210Po and 210Pb remobilization from lake sediments in relation to iron and manganese cyling. doi
  3. (1989). A Brownian-pumpiin model for oceanic trace metal scavenging: Evidence from Th isotopes. doi
  4. (1992). A geochemical study on the specific distribution of barium in doi
  5. (1996). A laboratory study of the biogeochemical cycling of Fe, Mn, Zn and Cu across the sediment-water interface of a productive lake. doi
  6. (1999). A novel DGT-sediment trap device for the in situ measurement of element remobilization from settling particles in water columns and its application to trace metal release from Mn and Fe oxides. doi
  7. (1983). Active biological participation in lacustrine barium chemistry. doi
  8. (1993). Adsorption and coprecipitation of divalent metals with mackinawite (FeS). doi
  9. (2002). Al(III) and Fe(III) binding by humic substances in freshwaters, and implications for trace metal speciation. doi
  10. (1989). Aluminium speciation and organic carbon in waters of central Ontario. Environmental Chemistry and Toxicity of Aluminium.
  11. (1998). An assemblage model for cation binding by natural particulate matter. doi
  12. (1996). Aquatic Chemistry. doi
  13. (1985). Artifacts in the use of selective chemical extraction to determine distributions of metals between oxides on Mn and Fe. doi
  14. (1997). Association of cobalt and manganese in aquatic systems: Chemical and microscopic evidence. doi
  15. (1991). Barite Formation in the Southern-Ocean Water Column. doi
  16. (1989). Biogeochemistry of barium and strontium in a softwater lake. doi
  17. (1993). Characteristics of lacustrine diagenetic iron oxyhydroxides. doi
  18. (1992). Characterization of lacustrine iron sulfide particles with proton-induced X-ray emission. doi
  19. (1997). Comparison of Cu and Zn cycling in eutrophic lakes with oxic and anoxic hypolimnion. doi
  20. (1982). Concentrations of major ions in lakes and tarns of the English Lake District
  21. (1993). Coprecipitation and adsorption of Mn(II) with mackinawaite (FeS) under conditions similar to those found in anoxic sediments. doi
  22. (1997). Critically Selected Stability Constants of Metal Complexes Database, version 4.0.,
  23. (1995). Cycles Of Trace-Elements (Copper and Zinc) doi
  24. (1996). Diel, episodic and seasonal changes in pH and concentrations of inorganic carbon in a productive lake. doi
  25. (2002). Evidence for a dynamic cycle between Mn and Co in the water column of a stratified lake. doi
  26. (1989). Experimental concentration-time curves for the iron(II) sulphide precipitation process in aqueous solutions and their interpretation. doi
  27. (1978). Ferrous iron-sulfide interactions in anoxic hypolimnetic waters. doi
  28. (1994). Geochemical behaviour of barium in the vicinity of a MnO2/ Mn 2+ redox front formed in a eutrophic lake. doi
  29. (1994). Geochemical study of a crater lake -Pavin Lake, France - Identification, location and quantification of the chemical reactions in the lake. doi
  30. (1995). Geochemical study of a crater lake (Pavin Lake, France): Trace-element behaviour in the monimolimnion. doi
  31. (1997). Geochemical study of a crater lake: Lake Pavin, Puy de Dome, France. Constraints afforded by the particulate matter distribution in the element cycling within the lake. doi
  32. (1985). Geochemistry of stream fulvic and humic substances. Humic Substances in Soil, Sediment, doi
  33. (1998). Geochemistry of trace metals associated with reduced sulfur in freshwater sediments. doi
  34. (1998). Humic ion-binding Model VI: an improved description of the interactions of protons and metal ions with humic substances.
  35. (1993). Iron and manganese in lakes. doi
  36. (1981). Iron oxide from a seasonally anoxic lake. doi
  37. (1982). Long-term and seasonal changes in the chemical composition of precipitation and surface waters of lakes and tarns in the English Lake District. doi
  38. (1988). Metals in aquatic systems. doi
  39. (1997). Morphological and compositional evidence for biotic precipitation of marine barite. doi
  40. (1984). Oxidation products of Mn(II) in lake waters. doi
  41. (1985). Partitioning and transport of metals across the O2/H2S interface in a permanently anoxic basin: Framvaren Fjord, doi
  42. (1983). Rapid colorimetric procedure for the determination of acid volatile sulphide in sediments. doi
  43. (1995). Redox-driven cycling of trace elements in lakes. doi
  44. (1985). Redox-related geochemistry in lakes; alkali metals, alkaline earth metals, and 137Cs. Chemical Processes in
  45. (1980). Seasonal transformations and movements of iron in a productive English lake with deep-water anoxia. doi
  46. (1983). Seasonal-Variations in the Concentrations of Humic Substances in a Soft-Water Lake. doi
  47. (1973). Sorption of heavy metal ions by a hydrous manganese oxide. doi
  48. (1997). Speciation and cycling of trace metals in Esthwaite Water: A productive English lake with seasonal deepwater anoxia. doi
  49. (2000). Speciation, reactivity, and cycling of Fe and Pb in a meromictic lake. doi
  50. (1986). Talling doi
  51. (1993). The behavior of barium in anoxic marine waters. doi
  52. (1983). The behavior of Zn, doi
  53. (1998). The biogeochemical behaviour of trace metals in a seasonally anoxic lake., doi
  54. (1992). The biogeochemical cycling of trace metals in the water column of Lake Sammamish, Washington: Response to seasonally anoxic conditions. doi
  55. (1996). The biogeochemical cycling of Zn, Cu, Fe, Mn, and dissolved organic C in a seasonally anoxic lake. doi
  56. (1982). The chemistry of suspended matter in Esthwaite Water, a biologically productive lake with seasonally anoxic hypolimnion. doi
  57. (1992). The cycling of iron and manganese in the water column of Lake Sammamish, doi
  58. (1982). The dynamics of iron and manganese in a seasonally anoxic lake; direct measurement of fluxes using sediment traps. doi
  59. (1985). The dynamics of iron and manganese in the surface sediments of a seasonally anoxic lake. Archiv für Hydrobiol.,
  60. (1995). The geochemical cycling of stable Pb, 210Pb, and 210Po in seasonally anoxic Lake doi
  61. (1994). The geochemical cycling of trace elements in a biogenic meromictic lake. doi
  62. (1983). The mechanism of Co(II) oxidation on synthetic birnessite. doi
  63. (1991). The Oxford submicron nuclear microscopy facility. doi
  64. (1982). Trace metal solubility in an anoxic fjord. doi
  65. (1981). Transport processes of copper and zinc in a highly eutrophic and meromictic lake. Schweizerische Zeitschrift für Hydrologie - doi
  66. (2000). Vertical gradients in particle distribution and its elemental composition under oxic and anoxic conditions in a eutrophic lake, Scharmutzelsee,
  67. (1998). Voltammetric characterization of a dissolved iron sulphide species by laboratory and field studies. doi
  68. (1996). water column of a productive lake during seasonal anoxia.
  69. (1994). WHAM- a chemical equilibrium model and computer code for waters, sediments, and soils incorporating a discrete site/electrostatic model of ion binding by humic-substances. doi
  70. (2001). WHAM6. Windermere Humic Aqueous Model. Equilibrium chemical speciation for natural waters.,
  71. (2001). Zinc speciation in Lakes Manapouri and Hayes, New Zealand.

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