Soil gas radon, indoor radon and gamma dose rate in CZ: contribution to geostatistical methods for European atlas of natural radiations

Abstract

A comparison of Czech indoor radon data, soil gas radon data and gamma dose rate was performed on the data sets of 92,276 indoor radon measurements in existing dwellings (National Radiation Protection Institute - NRPI), database of 9500 test sites of soil gas radon measurements (Czech Geological Survey - CGS) georeferenced to levels of gamma dose rate map. Three methods were used for the study of soil gas Rn-indoor Rn relationship: (1) based on the vectorised point soil gas and indoor data related to vectorised areas of gammadose rate, (2) vectorised soil gas-indoor data based on vectorised geological units and (3) soil gas and indoor data related to grid squares 10 x 10 km2. The first and second methods seem to express the closer correlation compared with the third one, however the correlation using the third method is influenced by the representativeness of data value in the square of 100 km2 area. On the other hand, the third method can be used for the overview coverage of the continental areas with lack of input information.

Methodology for determination of radon prone areas combining the definition of a representative building enclosure and measurements of terrestrial gamma radiation

“…• Direct measurement of Indoor Radon Concentration (IRC) by placing alpha track detectors in buildings. • Indirect methods based on variables correlated to radon like radon gas from soils (Kemski et al, 2001;Barnet and Fojtíková, 2008), gamma radiation (García-Talavera et al, 2013) or the uranium content of rocks (Arnedo et al, 2017;Ielsch et al, 2010). • Hybrid methods which combine direct measurements with geological or radiological variables (Kemski et al, 2009;Cinelli et al, 2011).…”

Determination of Residential Soil Gas Radon Risk Indices Over the Lithological Units of a Southwestern Nigeria University

“…Radon index in the present study was determined based on in situ measurement of radon concentration in soil and soil permeability of underlying soils to the buildings in the area. These two parameters are useful in determining the radon index of an environment and have been used by several researchers 4,27,28 . This study employed the Barnet et al 27 model to categorise the soil in the study area into different permeability range as shown in Table 1.…”

“…These two parameters are useful in determining the radon index of an environment and have been used by several researchers 4,27,28 . This study employed the Barnet et al 27 model to categorise the soil in the study area into different permeability range as shown in Table 1. The input parameter for radon index assessment is the third quartile of the soil gas radon concentration.…”

“…Classification of radon risk level(Barnet et al 2008). *C Rn is the radon concentration in soil gas.…”

Soil gas radon and soil permeability assessment: Mapping radon risk areas in Perak State, Malaysia

“…Geogenic radon potential (GRP) is the parameter that quantifies the amount of radon transported from nearby geological formation to the atmosphere or an indicator of the potential of the soil to constitute a source of indoor radon [15]. Several studies have reported a relationship between GRP and indoor radon concentration, while others have obtained radon risk maps based on the measurement of radon activity concentration and soil gas permeability [15,[19][20][21][22][23]. High GRP indicates a high probability of radon entering indoors due to geogenic reasons, such as radium and uranium content of the bedrock and rock permeability as well as faults that are related to radon mobility [14].…”