A COMPREHENSIVE STUDY OF RESIDENTIAL, GEOGENIC AND WATER RADON IN THE NORTH AREA OF MURES COUNTY, ROMANIA

摘要

This study presents results of a complex survey about residential, soil and water radon in the North of MureAY county (Romania). Indoor radon measurements were performed by using CR-39 track detectors, while radon concentrations in soil and in water were measured by using the LUK3C device and accessories. The indoor radon concentrations of 157 houses ranged from 9 to 414 Bq m(-3), with an arithmetic mean of 131 Bq m(-3) and a geometric mean of 105 Bq m(-3). In similar to 3.2% of the investigated houses exceed the recommended reference level of 300 Bq m(-3). The soil gas radon concentrations in 137 sampling points varied from 5.0 to 88.0 kBq m(-3), with a geometric mean of 14.6 kBq m(-3). Results of 190 water samples shows radon concentrations from 0.2 to 28.0 Bq L-1, with a geometric mean of 5.0 Bq L-1. Beside these results, indoor, soil and water radon maps were performed, divided into cells of 5 km x 5 km.