SPATIAL-DISTRIBUTION OF RADON CONTENT OF SOIL-GAS AND WELL-WATERS MEASURED WITH ETCHED TRACK RADON MONITORS

We have measured the spatial distribution of radon content of ground-w ater and of soil-gas in Matraderecske village (Hungary) using etched t rack type radon monitors. The applicability of the used in-situ method to measure radon content of ground-water is tested and discussed. Reg ression analysis between ground-water radon level, soil-gas radon cont ent and other parameters, such as temperature, pH level and the electr ic conductivity of water revealed no significant linear correlation be tween any pair of the above parameters. Surface maps of radon activity levels in soil and in ground-water were computed and compared to each other and to geological structure of the area.