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Geochemical and biological controls over methylmercury production and degradation in aquatic ecosystems
It is the goal of this paper to discuss the more salient recent AdvancCll in the understanding of the controls of net CH3Hg formation in Datural systems. The discussion lIighlights the gaps inExpand
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Mercury reduction and complexation by natural organic matter in anoxic environments
Mercuric Hg(II) species form complexes with natural dissolved organic matter (DOM) such as humic acid (HA), and this binding is known to affect the chemical and biological transformation and cyclingExpand
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Kinetic controls on the complexation between mercury and dissolved organic matter in a contaminated environment.
The interaction of mercury (Hg) with dissolved natural organic matter (NOM) under equilibrium conditions is the focus of many studies but the kinetic controls on Hg-NOM complexation in aquaticExpand
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Mercury and methylmercury in Hudson River sediment: impact of tidal resuspension on partitioning and methylation
The Hudson River estuary is highly polluted with heavy metals, polychlorinated biphenyls (PCBs) and PAHs. The sediment of the estuary is subjected to substantial erosion and redeposition resulting inExpand
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Influence of dissolved organic matter on the complexation of mercury under sulfidic conditions.
The complexation of Hg under sulfidic conditions influences its bioavailability for microbial methylation. Neutral dissolved Hg-sulfide complexes are readily available to Hg-methylating bacteria inExpand
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Determining the Reliability of Measuring Mercury Cycling Gene Abundance with Correlations with Mercury and Methylmercury Concentrations.
Methylmercury (MeHg) is a bioaccumulative toxic contaminant in many ecosystems, but factors governing its production are poorly understood. Recent work has shown that the anaerobic microbialExpand
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Characterization of soils from an industrial complex contaminated with elemental mercury.
Historical use of liquid elemental mercury (Hg(0)l) at the Y-12 National Security Complex in Oak Ridge, TN, USA, resulted in large deposits of Hg(0)l in the soils. The fate and distribution of theExpand
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X-ray fluorescence mapping of mercury on suspended mineral particles and diatoms in a contaminated freshwater system
Mercury (Hg) bioavailability and geochemical cy- cling is affected by its partitioning between the aqueous and particulate phases. We applied a synchrotron-based X- ray fluorescence (XRF) microprobeExpand
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Bacterial growth phase influences methylmercury production by the sulfate-reducing bacterium Desulfovibrio desulfuricans ND132.
The effect of bacterial growth phase is an aspect of mercury (Hg) methylation that previous studies have not investigated in detail. Here we consider the effect of growth phase (mid-log, late-log andExpand
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Controlling Mercury Release from Source Zones to Surface Water: Initial Results of Pilot Tests at the Y-12 National Security Complex
This report presents initial results obtained during year 2008 and satisfies a deliverable listed in the work breakdown structure (WBS) element OR081301. Broad objectives of the multi-year projectExpand
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