Measurements of Radon Content in the Thermal Waters in Sakarya

The paper presents the results of radon concentration measurements in thermal waters of Kuzuluk and Taraklı (Sakarya, Turkey) and their contribution to annual effective dose exposure. The radon measurements were performed using RAD 7, a solid state α detector, with RAD H₂O accessory. The results show that the radon activities are within the range of 0.19-5.89 Bql¯¹ with an average value of 0.98 Bql¯¹. The associated annual effective doses have been estimated to range from 0.14 to 0.40 μSvy¯¹ for ingestion and from 1.81 to 5.14 μSvy¯¹for inhalation of radon released from the water. These values are significantly lower than the WHO recommended limit of 100 μSvy¯¹