Abstract
The gas phase reaction between elemental mercury (Hg0) and ozone (03) has been studied in sunlight, in darkness, at different temperatures, and different surface-to-volume (s/v) ratios. At 03 concentrations above 20 ppm, a loss of Hg0 and a simultaneous formation of oxidized mercury (Hg(II)) was observed. The results suggest a partly heterogeneous reaction, with a gas phase rate constant of 3±2×10−20 cm3 molec.−1 s−1 at 20 °C. This corresponds to an atmospheric Hg half-life of about one year at a mean global 03 concentration of 30 ppb.
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Hall, B. The gas phase oxidation of elemental mercury by ozone. Water Air Soil Pollut 80, 301–315 (1995). https://doi.org/10.1007/BF01189680
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DOI: https://doi.org/10.1007/BF01189680
Keywords
- Oxidation
- Mercury
- Ozone
- Phase Reaction
- Phase Oxidation