Results of measurements of soil activity, soil gas and indoor radon concentrations in Prilep and Skopje

摘要

The preliminary measurements of radon and thoron concentrations in the soil gas were done, using short term active method. Field measurements were made at a distance of 1-2 m away from the randomly selected houses in Skopje and Prilep. Ten series of short-term (10minutes) measurements were made. The arithmetic mean values of radon and thoron concentrations in the soil gas were found to be 15.9 ± 5.6 kBq m-3 and 5.3 ± 2.3 kBq m-3, respectively. Activity concentrations of 4oK, 226Ra and 232Th in soil were evaluated from gamma spectrometry analysis on the soil samples that were collected from the same locations. Indoor radon concentrations were measured in the houses ofthe same locations.