Radon measurements in soil to predict indoor radon concentrations in new buildings in an area with unusually high radon levels

Ennemoser, O.; Giacomuzzi, Salvatore; Brunner, P.; Schneider, P.; Stingl, Volkmar; Purtscheller, F.; Ambach, W.

doi:10.1016/0048-9697(95)04463-b

Cited by 12 publications

(6 citation statements)

References 2 publications

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“…Thermally induced subterranean air flows are expected in permeable, unsaturated surficial materials deposited on slopes or on top of irregular less permeable materials as well as in highly permeable bedrock (Rose and Guo 1995), and several studies conclude that indoor radon concentrations in such areas may be extraordinary in magnitude and fluctuation. Ennemoser et al (1993Ennemoser et al ( , 1994Ennemoser et al ( , 1995 reported average annual indoor radon concentrations up to 49 000 Bq m −3 in dwellings located on a highly permeable alluvial fan in the western Tyrol and attributed the pattern of seasonal variations observed to thermal convection inside the fan. Arvela et al (1994) observed that indoor radon concentrations in dwellings located on highly permeable esker formations were amplified in the upper part of the deposit in winter and in certain slope zones in summer due to convection in the ground, and indoor radon concentration up to 20 000 Bq m −3 have been reported from dwellings located on this type of building ground ( Åkerblom 1994).…”

Section: Discussionmentioning

confidence: 99%

Anomalously high radon concentrations in dwellings located on permeable glacial sediments

et al. 2007

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Indoor radon concentrations were measured in different seasons in 104 dwellings located on a highly permeable ice-marginal moraine in Kinsarvik, Western Norway. The measurements revealed the highest indoor radon levels ever detected in Norway and extreme variations in seasonal and short-term indoor radon levels. Annual average indoor radon concentrations up to 56 000 Bq m(-3) and a mean value of 4340 Bq m(-3) for the whole residential area are reported. By using the ICRP conversion factors to effective dose, these indoor radon values correspond to a total annual effective dose of 930 mSv and 72 mSv, respectively. By using the conversion as recommended by UNSCEAR, the effective doses would be about 50% higher. The indoor radon concentrations are found to be strongly influenced by thermally induced flows of radon-bearing soil air directed towards the upper part of the ice-marginal deposit in winter and towards the area of lowest elevation in summer. The pattern of seasonal variations observed suggests that in areas where thermal convection may occur, annual average indoor radon levels should be derived from measurements performed both in summer and in winter.

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Section: Discussionmentioning

confidence: 99%

Anomalously high radon concentrations in dwellings located on permeable glacial sediments

et al. 2007

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“…These phenomena were described by Wilkening (1990), Hakl et al (1995 and Robé and Labed (1995). The snow cover, described as a factor which decreases the radon activity in the atmosphere (Juzdan et al, 1985;Somogyj et al, 1986;Feichter and Crutzen, 1989;Dörr and Münnich, 1990;Jacob and Prather, 1990;Ennemoser et al, 1995), is not the dominant factor because on this area the period of snow cover is very short.…”

Section: Seasonal Variation Of Radon Activity In the Airmentioning

confidence: 99%

Distribution of radon activity in the atmosphere above Wzgórza Niemczansko-Strzelinskie (South-WestPoland) and its dependence on uranium and thorium content in the underlying rock and indirect ground basement

Ochmann

2009

Annals of Geophysics

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Radon activity in the atmosphere and its behavior in the environment have been investigated using LR-115 nuclear track detector. The complex geological structure of Wzgórza Niemczańsko-Strzelińskie (south-west Poland) enabled this problem to be studied in various geological conditions. The eU and eTh content in rocks and soil was measured by gamma-spectrometer GR-320. Uranium content of bedrock reached its maximum value of 15 ppm in the case of quartz-graphite schist. Thorium reached its maximum value of 35 ppm in the case of granodiorite. Radon activity was measured by means of long-term exposure of LR-115. The mean value of atmospheric radon activity was 21 Bqm -3 in the air 2 m above the ground surface. The highest radon activities were measured in the area of granite and quartz-graphite schist outcrops and in the area of mylonitic rocks of the Niemcza Zone. Radon activity in close to ground cup detectors varies from 25 to 300 Bqm -3 , these values depend on uranium and thorium content in indirect ground basement (soil and weathered rocks). Not only uranium and thorium content but also rock disintegration due to tectonic events (shear zones) influenced atmospheric radon activity. Seasonal variation is not strong, although higher values were measured in the autumn-winter period.

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“…Building materials, water and natural gas are additional sources of indoors radon. Radon escapes through the cracks and pores of the soil and rocks in the earth's crust, then it seeps to the indoors air by a variety of factors such as: the difference in air pressure inside and outside the house, cracks, pores, holes in the basement of the house, the type of the soil, soil permeability, soil moisture content, porosity, and the uranium content of soil (Ennemoser et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

Radon concentration levels in the historical city of Jerash, Jordan

Alzoubi

Al-Azzam

Alqadi

et al. 2013

Radiation Measurements

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Radon measurements in soil to predict indoor radon concentrations in new buildings in an area with unusually high radon levels

Cited by 12 publications

References 2 publications

Anomalously high radon concentrations in dwellings located on permeable glacial sediments

Anomalously high radon concentrations in dwellings located on permeable glacial sediments

Distribution of radon activity in the atmosphere above Wzgórza Niemczansko-Strzelinskie (South-WestPoland) and its dependence on uranium and thorium content in the underlying rock and indirect ground basement

Radon concentration levels in the historical city of Jerash, Jordan

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