Abstract
The combined effect of light and hydrogen peroxide on the ability of surface snow to scavenge atmospheric mercury was investigated in Kuujjuarapik, Nunavik, Canada (latitude 55°N). Mercury concentrations in the snowpack increased five-fold upon spiking with hydrogen peroxide under solar irradiation. Anion analysis of the snow revealed the presence of chloride, which may stabilize Hg(II). Measurements of total inorganic and organic carbon showed that both kinds of carbon content decreased in the spiked irradiated snow samples.
Published Version
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