Comparison of radon concentrations in soil gas and indoor environment of Afyonkarahisar Province

Abstract

It is well known that radon is the main source of natural radiation exposure to the population. Indoor radon concentrations in an area are affected by ascending radon migration following the convection of groundwater and soil gas along fractures and faults in the bedrock sediments. There are various studies showing that positive radon anomalies in the soil gas are found to coincide with the locations of houses showing the highest concentrations. Moreover, soil gas radon levels and soil permeability are important factors in determining the radon potential of an area, because high permeability enables the increased migration of radon from the soil into houses. Since radon in homes originates mainly from soil gas radon, it is of public interest to study the correlation between soil gas radon and indoor radon in different geographic locations. In the present work, a correlation study was carried in conjunction with radon concentrations in soil gas and indoor environment of Afyonkarahisar Province. The provincial center was assumed to be divided into four regions according to the rock types and tectonic structure to show also the geological structure effect on radon concentrations. The indoor radon concentrations were measured in 74 dwellings using CR-39 passive nuclear track detectors, and the radon concentrations in soil gas were determined in 243 drilled holes using AlphaGUARD detector. The correlation coefficient of 0.97 was obtained between radon concentrations in soil gas and indoor environment of Afyonkarahisar Province.

Indoor Radon Levels In Dwellings of Kirklareli, Turkey

“…Radon is a significant source of ionizing radiation and responsible for more than % 50 of radiation from natural radioactivity sources [3]. Radon is a colorless, tasteless and odorless heavy noble gas which is produced by alpha decay of radium ( 226 Ra) and it exists in different levels in soil, water and air [4][5][6]. As a result of uranium decay in soil and rock, radon migrates through the ground, diffuses into the air and dissolves into the groundwater.…”

“…Radon gas penetrates into dwellings through the cracks and pores. Although the outdoor radon gas concentration levels are generally very low, indoor radon gas concentrations depend on the type of building material, soil permeability, water usage, floor level and meteorological conditions such as air temperature and pressure [6][7][8]. Radon mostly accumulates in closest levels of the dwellings to the soil and rocks such as ground floors and cellars.…”

Jeotermal Banyo Tedavileri Sırasında Radon Maruziyetinin Belirlenmesi

“…Inhalation of radon gas does not cause acute effects such as respiratory failure, headache and cough (Keith et al 2012). However, in order to prevent stochastic effects that may occur, it is essential to examine especially indoor radon levels (Yarar et al 2015;Günay et al 2018;Yalım et al 2018;İçhedef 2019;Günay et al 2019).…”