Relating Fish Hg to Variations in Sediment Hg, Climate and Atmospheric Deposition

Gas-particle partitioning of atmospheric Hg(II) and its effect on global mercury deposition

Atmospheric deposition of Hg(II) represents a major input of mercury to surface environments. The phase of Hg(II) (gas or particle) has important implications for deposition. We use long-term observations of reactive gaseous mercury (RGM, the gaseous component of Hg(II)), particle-bound mercury (PBM, the particulate component of Hg(II)), fine particulate matter (PM2.5), and temperature (T ) at ...

Atmospheric photolytic reduction of Hg(ii) in dry aerosols.

A laboratory reactor system was developed to examine the role of light and aerosol composition in the reduction of oxidized mercury (Hg(ii)) in laboratory-generated aerosols. Aerosolized sodium chloride, doped with mercury chloride, was exposed to light in a fixed-bed flow-through reactor. Three spectral ranges (UV, visible and a simulated solar spectrum) were examined, along with dark experime...

Source attribution and process analysis for atmospheric Hg

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Seasonal and diurnal variations of Hg over New England

Factors influencing diurnal to interannual variability in Hg over New England were investigated using multiyear measurements conducted by AIRMAP at the Thompson Farm (TF) coastal site, an inland elevated site at Pac Monadnock (PM), and two month measurements on Appledore Island (AI) in the Gulf of Maine. Mixing ratios of Hg at TF showed distinct seasonality with maxima in March and minima in Oc...

Seasonal and diurnal variations of Hg ◦ over New England