Место издания:Mongolian Academy of Sciences Ulaan-Baatar
Первая страница:61
Последняя страница:65
Аннотация:The content and pattern of the accumulation of 15 individual PAHs in the surface soil horizons of the city of Gusinoozersk were determined. The background soils near
Gusinoozersk are enriched in almost all the considered PAHs, their total amount is 2416
ng/g, high-molecular-weight 4-6 ringed compounds prevail. Located in the city fuel and energy industrial hub, consisting of Gusinoozyorskaya TPP and the Zagustayskiy, Okino-Klyuchevskiy and Bain-Zukherskiy coal mines, changes the state of the urban environment increasing the average amount of PAHs in the soils of Gusinoozersk up to 9445 ng/g. The total PAH content in the soils of various land-use zones varies from 1800 ng/g in the postagrogenic zone to 28449 ng/g in the high-rise residential subzone. Highly nuclear
fluoranthene (85% of the total PAHs) and benzo[b]fluoranthene (10%) make the greatest
contribution to the pollution of urban soils with PAHs. Assessment of the environmental
hazard of soil pollution with the PAHs takes into account their carcinogenic potential in
relation to benzo[a]pyrene (BaP). The sum of BaP-equivalents for individual PAHs in
urban soils varies from 7 ng/g in the postagrogenic zone to 291 in the high-rise residential subzone, which is almost 15 times higher than the MPC for BaP in soils.