ASSESSMENT OF POLLUTION OF THE MOSCOW CITY AIR WITH CARCINOGENIC PAH AND N-NITROSAMINES

Concentration levels of carcinogenic polycyclic aromatic hydrocarbons (PAH) estimated by benz(a)pyrene (BP) were determined in air of differ ent Moscow city areas. BP content varied from 1 ng/m(3) in the eco- lo gically clean areas (parks and forests) to 10 ng/m(3) in the city cent er, and 20-30 ng/m(3) in the areas adjacent to large factories and cro ssroads with heavy traffic. Concentrations of 15 main PAH in the ambie nt air were determined as well as their profiles (i. e. the ratio of t heir contents to that of BP). industrial enterprises were shown to be the main sources of PAH pollution. Concentrations of carcinogenic N-ni trosamines in the Moscow city air varied from 50 ng/m(3) to 600 ng/m(3 ) (in the areas of resin factory emissions). The necessity of routine control of pollution with PAH (BP) and N-nitrosamines (estimated by N- nitro-sodimethylamine) has been shown.