Mapping of Indoor Radon Concentration in Houses Located in South Sulawesi Province

Mapping indoor radon concentrations in South Sulawesi Province by using a passive method had been conducted. In this research, the area under study was divided into several sections (grid). Each grid represents a 40km x
40km area that there will be installed passive radon monitoring at 6-10 population dependent response. Of 144 indoor passive radon monitor that had been installed for 3-4 months there were 140 pieces (97.22%) were taken back and further analyzed for radon in the lab for processing, read the track and then the radon concentrations were calculated. Furthermore, data concentration of radon in the home and GPS location as an input in the manufacture of radon concentration map using MapInfo Software v.10.5. The results of the analysis of the concentration of radon in houses in South Sulawesi were in the range of 3.430.24 Bq/m3 and 69.384.91 Bq/m3. These results were lower than those of the reference level radon set by UNSCEAR (300 Bq/m3). This data is useful in the development plans and regional development, as well as the basis for health policy analysis due to radon in Indonesia. Furthermore, these data will be userd for the contribution of Indonesia in the international world through UNSCEAR, IAEA and WHO.