Airborne polycyclic aromatic hydrocarbons in the city of Zagreb, Yugoslavia.

The concentrations of six PAHs (benzo[a]pyrene, benzo[b]fluoranthene, ideno[1,2,3-c,d]-pyrene, benzo[a]anthracene, benzo[k]fluoranthene and fluoranthene), and lead have been measured systematically for six winter periods from 1977/78 to 1982/83 in the urban air of the city of Zagreb. The average mass concentrations of PAHs were approximately 10 ng m-3. The distribution of PAHs in urban air is discussed. The analytical method for PAH determination is based on filter extraction, two-dimensional thin-layer chromatography and fluorescence spectrometry; lead is measured by atomic absorption.