[Hygienic evaluation of ambient air pollution in Ust'-Kamenogorsk].

The article deals with hygienic evaluation of Ust-Kamenogorsk ambient air pollution with nitrogen dioxide, carbon dioxide, phenol and suspended solids. Ambient air samples were taken in 36 points over 3 days at 6 am, noon, 6 and 9 pm (local time) during warm season (August) and cold season (December). According to the results obtained, the authors divided Ust-Kamenogorsk territory into 2 areas, based on IAP4 (index of air pollution): conditionally dirty area--over 7; conditionally clean area--under 7.