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Interaction of gaseous elemental mercury with snow surfaces: laboratory investigation
The interaction of elemental mercury with ice surfaces based on the migration behaviour at sub-ppt concentrations in a packed bed flow tube is discussed. Analysis shows that elemental mercury interacts only weakly with ice surfaces and suggests an adsorption enthalpy of −28 ± 2 kJ mol−1. The experiments further reveal an adsorption equilibrium constant, which quantifies the partitioning of elemental mercury between the surface and the gas phase, with a value of 12 cm at 140 K. Extrapolation to environmental conditions gives a range for the equilibrium constant of 3 × 10−4 to 4 × 10−3 cm at 230 K.
Interaction of gaseous elemental mercury with snow surfaces: laboratory investigation
The interaction of elemental mercury with ice surfaces based on the migration behaviour at sub-ppt concentrations in a packed bed flow tube is discussed. Analysis shows that elemental mercury interacts only weakly with ice surfaces and suggests an adsorption enthalpy of −28 ± 2 kJ mol−1. The experiments further reveal an adsorption equilibrium constant, which quantifies the partitioning of elemental mercury between the surface and the gas phase, with a value of 12 cm at 140 K. Extrapolation to environmental conditions gives a range for the equilibrium constant of 3 × 10−4 to 4 × 10−3 cm at 230 K.
Interaction of gaseous elemental mercury with snow surfaces: laboratory investigation
Interaction of gaseous elemental mercury with snow surfaces: laboratory investigation
Thorsten Bartels-Rausch (author) / Thomas Huthwelker (author) / Martin Jöri (author) / Heinz W Gäggeler (author) / Markus Ammann (author)
Environmental Research Letters ; 3 ; 045009
2008-10-01
5 pages
Article (Journal)
Electronic Resource
English