[The content of benzpyrene in different areas of a megapolis].

The content of benzpyrene was studied in the ambient air of the mixed, residential, and industrial zones of Tashkent. There was no excess of the maximum allowable concentrations (MAC) of this substance in the ambient air of mixed and residential zones. There were 1.5-2-fold excesses in the MAC of benzpyrene in the places where apartment houses were contiguous with industrial enterprises and highways and 2.5-3-fold excesses in the ambient air of an industrial zone.