Maria Karpińska1, Stanisław Wołkowicz2, Kalina Mamont-Cieśla3, Zenon Mnich1, Jacek Kapała1
1 Department of Biophysics, Medical University of Białystok, 2A Mickiewicza Str., 15-089 Białystok, Poland,
2 Polish Geological Institute, 4 Rakowiecka Str., 00-975 Warsaw, Poland,
3 Central Laboratory for Radiological Protection, 7 Konwaliowa Str., 03-194 Warsaw, Poland
In a region of two lithologic units: the Augustów Plane sandr and the Suwałki sands and fluvioglacial
gravels, 134 measurements of radon concentrations in dwelling houses were performed. An integral
method of solid state nuclear trace detectors (SSNTD) was used in the studies. Statistically significant
differences in the radon concentrations in both geological units were obtained. The radon concentration
arithmetic mean was 197 Bq m-3, geometric mean - 119 Bq m-3, median - 111 Bq m-3,
the maximal value being 1225 Bq m-3 in the region of the Suwałki fluvioglacial sands and gravels.
The Augustów Plane sandr revealed arithmetic mean of radon concentration equal to 123 Bq m-3,
geometric mean – 80 Bq m-3, and median equal to 67 Bq m-3, maximal value
695 Bq m-3. The annual effective dose of the radon obtained by inhabitants of the Augustów
Plane sandr is 1.7 mSv and for inhabitants of the Suwałki fluvioglacial sands and gravels it is 2.5 mSv.