INDOOR RADON CONCENTRATIONS IN THE TOWN OF PODGORICA-MONTENEGRO

Indoor radon survey in the town of Podgorica, capital of Montenegro, w as performed in winter season 1994-95. The town houses were classified on the basis of their construction materials and techniques in 4 dist inct types. Radon was measured in 110 dwellings, selected with respect to the types and locations of houses. Measurements were carried out b y cellulose nitrate track detectors, exposed for 90 days in living-roo ms on ground floors. Equilibrium equivalent concentrations of radon ar e found to be in (4 - 453) Bq/m(3) range, with a median of 26.4 Bq/m(3 ). They belong to a log-normal distribution (geometric mean: 21.8 Bq/m (3), geometric standard deviation: 2.20 Bq/m(3)). The detached houses built of bricks have the highest average indoor radon level, and the a partment houses made of concrete and bricks, with plaster on the walls , the lowest one.