Soil gas and indoor radon mapping in a Hungarian village located at a geologically active area

Radon entering the house is the main source of radiation exposure to the public. There have been performed numerous studies to understand this transport process, the main influencing factors as geology, geochemistry, building strategy etc. One of the most important parameters, which plays role in this transport process is the radon concentration of the underlying soil. This source term in the case of its great spatial variability may suppress the dependence of indoor radon concentrations on all the other parameters. We developed a method which allows us to study indoor radon concentration dependence on house characteristics through eliminating the fluctuations on this source term. The method was applied on the region of Matraderecske village, where extremely high indoor radon concentrations accompanied by CO2 occurrences were measured