Comparison of radon concentrations in soil gas and indoor environment of Afyonkarahisar Province
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ICCESEN 2017
Comparison of radon concentrations in soil gas and indoor environment of Afyonkarahisar Province Hüseyin Ali Yalım 1 & Ayla Gümüş 1 & Can Başaran 2 & Metin Bağcı 2 & Ahmet Yıldız 2 & Duygu Açil 3 & Merve Özçelik 3 & Mehmet Zeki İlhan 3 & Rıdvan Ünal 4 Received: 26 January 2018 / Accepted: 16 April 2018 # Saudi Society for Geosciences 2018
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. Keywords Soil gas radon . Indoor radon . Geological structure . Afyonkarahisar
Introduction It is well known that radon and its decay products consist of about 50% of the total inhalation doses to human population exposed to the natural radiation sources (Oikawa et al. 2003; Kullab et al. 2001; UNSCEAR 1993, 1988). This article is part of the Topical Collection on Geo-Resources-EarthEnvironmental Sciences * Hüseyin Ali Yalım [email protected] 1
Physics Department, Afyon Kocatepe University, Afyonkarahisar, Turkey
2
Department of Geological Engineering, Afyon Kocatepe University, Afyonkarahisar, Turkey
3
Graduate School of Natural and Applied Sciences, Afyon Kocatepe University, Afyonkarahisar, Turkey
4
Health Services Vocational School, Uşak University, Uşak, Turkey
The epidemiological studies have shown that inhaling radon and its progenies make the public inevitable dealing with an increasing risk of lung cancer (UNSCEAR 2000). Therefore, it is essential to determine the mean of a long-term indoor radon and its decay product levels in the environment and soil gas (Durrani and Ilic 1997; Mehra and Bala 2013). Indoor radon conce
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