Studies on temporal variations of radon in Swedish single-family houses

Effect of Soil Moisture on Seasonal Variation in Indoor Radon Concentration: Modelling and Measurements in 326 Finnish Houses

“…The Swedish results on seasonal variation show a similar seasonal pattern in indoor radon concentration (5) , but with a less pronounced summer minimum. Sweden is a neighbouring country of Finland.…”

Seasonal changes in radon concentrations in buildings in the region of northeastern Poland

“…In Sweden, radon concentrations in 2-month exposure in the house-heating period were considered to be representative for the annually averaged radon concentration. Studies by Hubbard et al (1996) showed that the mean, determined in this way, is overestimated and determination of the annual mean obtained in 2-or 3-month exposure is only slightly closer than that measured in 1-month observation. In Poland, seasonal changes in radon concentrations were observed in screen studies.…”

“…The screen studies, carried out in the northeastern region of Poland, started in 1994-1996(Zalewski et al, 1998Karpiń ska et al, 2002) and continued in the following years, were used in choosing buildings for the study. The database was used to select the buildings in which radon concentrations were approximately 300 Bq m À3 .…”

Lorenz Curve and Gini Coefficient: Novel tools for analysing seasonal variation of environmental radon gas

“…As there are relatively few comprehensive SCF datasets available, nearly all derived from the temperate regions of the Northern Hemisphere, the information collated for this study can be regarded as representative of the current state of knowledge. Geographical areas for which data were identified include the principal regions of mainland Britain (UKCC, 2002) and of France (Baysson et al, 2003), together with results from a number of other European countries (Madden et al, 1994;Hubbard et al, 1996;Karpinska et al, 2004;Tapia et al, 2006;Bossew and Lettner, 2007), from India (Singh et al, 2007) and localised data from different parts of Canada (Chen, 2003;Krewski et al, 2005b) and the USA (Steck et al, 2004;Momčilovič and Lykken, 2007). In addition, the effect of radon measurement duration has been explored in detail, as have results from soil-gas radon determinations and ventilation comparison experiments, all demonstrating the versatility of the treatment.…”

“…Recent studies , by the Radon Research Group at the University of Northampton and Northampton General Hospital, of radon levels in a set of houses situated on radon-rich strata in Northamptonshire, England, indicate that the SCFs recommended for application in the United Kingdom (UK) may not be applicable nationwide and are influenced by the underlying geology at the measurement site. Other studies have concluded that different SCF sets are required for different regions of the UK (UKCC, 2002) and for different regions of France (Baysson et al, 2003); further published results indicate that SCFs applicable to the UK differ significantly from those derived elsewhere in Europe (Madden et al, 1994;Azimi, 1996;Hubbard et al, 1996;Baysson et al, 2003;Karpinska et al, 2004;Tapia et al, 2006;Bossew and Lettner, 2007), Asia (Singh et al, 2007) and North America (Chen, 2003;Krewski et al, 2005b) in both amplitude and phase. These observations suggest that different SCFs may be required in localities of differing geological, geographical and climatic characteristics, reinforcing the close links between experimentally observed domestic radon concentrations and the geological and geographical environments (Miles and Appleton, 2005), and supporting the thesis that seasonal variability in indoor radon concentration cannot realistically be represented by a single national or international SCF scheme.…”