Abstract

The concentration of polycyclic aromatic hydrocarbons (PAHs) in atmospheric precipitation and aerosol samples was monitored in a rural site by Lake Balaton, Hungary to examine the seasonal variation. The seasonal mean concentration of individual 3-6-ring PAHs in precipitation varied from 1 to 54 ng l −1 and from 3 to 350 ng l −1 in summer and winter, respectively. In the atmospheric aerosol samples the seasonal mean concentration of PAHs varied from 4 to 880 pg m −3, from 4 to 300 pg m −3, from 11 to 1050 pg m −3 and from 36 to 5000 pg m −3 in spring, summer, autumn and winter, respectively. Wet (412 μg m −2 year −1) and aerosol (190–300 μg m 2 year −1) deposition rates were also estimated indicating that the two processes are of comparable importance in the removal of 3-6-ring PAHs from the atmosphere.

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