Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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 (Autor:in) / Thomas Huthwelker (Autor:in) / Martin Jöri (Autor:in) / Heinz W Gäggeler (Autor:in) / Markus Ammann (Autor:in)
Environmental Research Letters ; 3 ; 045009
01.10.2008
5 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch