TEMPORAL REGULARITIES OF DISTRIBUTION OF BENZ(A)PYRENE CONCENTRATIONSIN THE ATMOSPHERIC AIR

The regularities of temporal distribution of benz(a) pyrene (BP) conce ntrations in the ambient air in a number of cities in Ukraine and Hung ary were studied. Some assets of BP dynamics over annual and 24-hour-c ycles in the cities with different levels of atmospheric carcinogenic pollutions came available. The links between the average month BP conc entrations and some meteorological factors were demonstrated. Quantita tive relationships between BP atmospheric concentration at various tim e-averaged periods are treated and described mathematically. For 24-ho ur cycle they are as follows: C3hr : C6hr : C12hr : C24hr=2.6 : 1.8 : 1.3 : 1.0; and for annual one: C24hr : C(mth): C(yr)=5.0-8.0 : 2.0-2.5 : 1.O. The ratios shown should be perceived through analysing the dat a on BP atmospheric monitoring and utilized to substantiate the carcin ogen maximum permissible concentrations temporally differentiated (the ir average values within 24 hours, a month, and a year respectively).