Abstract
Using the flux balance of the forest canopy of a beech and a spruce stand annual rates of total deposition — divided into precipitation and interception deposition — were derived for 4 polycyclic aromatic hydrocarbons (PAH). The deposition of PAH is in general higher under spruce because of higher rates of interception deposition as compared to beech. The rate of interception deposition of the various PAH compounds (3.4-Benzopyrene, Indeno (1,2,3-cd)pyrene,1.12 Benzoperylene, Fluoranthene) are significantly different. Substantial amounts of PAH are transferred to the soil by litterfall, which indicates adsorption of PAH on leaf and needle surfaces.
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