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1995
Journal Article
Titel
Uptake of phosgene by atmospheric clouds and sea-spray droplets
Abstract
Phosgene is a product of atmospheric degradation of chlorinated hydrocarbons initiated by OH radicals and Cl atoms. Sources and fate of phosgene are of interest since it has an impact on global warming and stratospheric ozone destruction. Since homogeneous gas phase reactions and photolysis are slow, heterogeneous hydrolysis of phosgene is the main sink in the troposphere. Measurements of the uptake rate over distilled water at various temperatures and different salt solutions using a wetted-wall flowtube technique will be presented. This method delivers the product of Henry's law constant and hydrolysis rate constant (...). The impact of heterogeneous hydrolysis on atmospheric lifetime will be discussed.