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(15-02) Tentative air concentrations of PAH, PCB and organochlorine pesticides in urban area of Kaunas, Lithuania. Bergqvist, Per-Anders*,1, Jegorova, Ilona1,2, Zaliauskiene, Audrone2, 1 Umea university, Umea, Sweden2 Kaunas University, Kaunas, Lithuania, Lithuania ABSTRACT- The two municipal sampling stations for air pollutants in the city of Kaunas were used for simultaneous sampling of PAH, PCB and organochlorine pesticides using passive sampling techniques during a three-week period in September 2000. The semipermeable membrane devices for air sampling were located on the roof of the stations near the inlet for sampling of gaseous pollutants like ozone, SO2 and CO2. The time weighted average concentrations for one three-week period were tentatively calculated using air and water calibration uptake rate data. Ten PAH compounds were studied and the results indicate a 25% higher air concentration at the city centre sampling station (Laisves avenue) compared with the suburban high traffic and industrial station (Dainava). The highest average concentration were phenanthrene (157 and 119 ng/m3. resp.) and the second highest were fluoranthene (60 and 54 ng/m3 resp.). For total PCB the highest pollution area were reversed. Dainava showed 8,4 ng/m3 whereas Laisves avenue had 4,9 ng/m3 in the air. Three hexachlorocyclohexane compounds were identified in the air during the three-week period. Again the Dainava showed higher air concentration compared with the city centre (8,0 and 4,1 ng/m3 resp.). The DDT group compounds and also hexachlorobenzene were similar in concentrations at both sites. This situation with urban pollution from PAH and PCB and HCH pollution from industrial area is compared with air quality data from the air monitoring stations. Key words: SPMD, air, urban, organochlorine pollutants |
