[Mutagenic activity of atmospheric dust in Warsaw]

The results are presented of the studies of the mutagenic activity of dust samples in atmospheric air in Warsaw in the heating and non-heating seasons. Dust samples were obtained with a Staplex-type device continuously during 24 hours. The dust collected on the filters was extracted with cyclohexane. The devaporized and dried extract, that is the so called tar substances, were the material for further studies. The mutagenic activity of the studied samples was determined using a modification of the test of somatic mutation and recombination (SMART) on Drosophila melanogaster. The cross-bred strain mwh x ORR: flr3/TM3, Ser specially prepared for the research of WAA was used. The dust in atmospheric air of Warsaw showed mutagenic activity which was higher in samples taken in the heating season.