Variance of indoor radon concentration: Major influencing factors

Yarmoshenko, Ilia V.; Vasilyev, Aleksey; Malinovsky, Georgy; Bossew, Peter; Žunić, Zora S.; Onischenko, Aleksandra; Zhukovsky, Michael

doi:10.1016/j.scitotenv.2015.09.077

Cited by 45 publications

(10 citation statements)

References 20 publications

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“…In the literature, one can find many papers dealing with the influence of various factors, including radon in sub-surface soil gas concentration and its transport to the higher floor levels, on indoor radon concentrations in residential buildings. Generally, so-called geogenic potential and building construction, including radium concentration in building materials and the radon exhalation rate from these materials, are recognized as major contributors to indoor radon levels [15]. Recently in Poland, a country-wide indoor radon survey was carried out, although it was limited mostly to small detached houses.…”

Section: Introductionmentioning

confidence: 99%

Survey of indoor radon (Rn-222) entry and concentrations in different types of building in Kalisz, Poland

Bem

Janiak

Przybył

2020

J Radioanal Nucl Chem

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Indoor radon (222Rn) was surveyed in a total of 141 individual houses and apartments used precalibrated passive PicoRad Detectors. The radon activity in the soil gas around the dwellings was simultaneously measured. The arithmetic mean values of indoor radon concentrations for detached houses, old buildings (up to four-stories), prefabricated blocks of flats (mostly five stories) and high-rise residential buildings (10-stories) were:, 70.9; 46.5; 38.4, and 56.6 Bq m−3, respectively. The average arithmetic mean value for all measured rooms equals 51.8 Bq m−3. The calculated average effective dose from indoor radon for the local population was equal to 2.2 mSv.

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Section: Introductionmentioning

confidence: 99%

Survey of indoor radon (Rn-222) entry and concentrations in different types of building in Kalisz, Poland

Bem

Janiak

Przybył

2020

J Radioanal Nucl Chem

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“…Former studies have revealed that indoor radon concentration is mainly related to environmental, meteorological parameters and building ventilation conditions. 12–16 Appropriate ventilation could reduce indoor pollution due to radon exhalation from the ground or from contaminated building materials. The Chinese standards in relation to the requirements for ventilation technologies have been reviewed by Fan et al., 17 emphasising the importance of appropriate means ventilation and control to reduce the concentration of indoor pollutants, is mainly affected by ventilation mode, ventilation performance, ventilation strategies.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of radon dispersion and dose assessment for typical ventilation schemes with an air purifier

Xie

Wang

et al. 2020

Indoor and Built Environment

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Radon is a radioactive pollutant that could pose hazards to the surrounding environment and people due to its radioactive decay progenies. In this study, numerical simulations of radon dispersion were conducted under natural and mechanical ventilation with an air-purifier for radon. Factors such as the air supply speed, position and air supply angles of the purifier were considered. Results showed that the increase in the air supply speed from the purifier was an effective solution to reduce indoor radon pollution. The effect was better when the purifier was in the middle of the room. The purification effect was similar when the air supply changed under natural ventilation, while purification function was more effective when the air supply angle was 60° under the mechanical ventilation condition. An effective dose estimation involving typical ventilation schemes with radon purifier was evaluated. Using this approach, the radiation effect on occupants was computed. The calculated effective dose was 0.9 mSv y−1 when the air supply speed of the purifier was 0.2 m s−1 under natural ventilation. As a result, the effective dose calculated was under the annual effective dose limit of 3–10 mSv y−1 recommended by the International Commission on Radiological Protection (ICRP) for public exposure.

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“…Over the past 50 years, direct measurements of radon concentration in dwellings have been carried out in many buildings, in particular, within the frames of thoroughly organized national and regional radon surveys. According to the UNSCEAR report, the worldwide average indoor radon concentration is about 50 Bq/m 3 [1], and it exceeds 150 Bq/m 3 in about 5% of the buildings [2].…”

Section: Introductionmentioning

confidence: 99%

Combined analysis of onco-epidemiological studies of the relationship between lung cancer and indoor radon exposure

Yarmoshenko

Malinovsky

2020

Nukleonika

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AbstractObjectives: Recent results of epidemiological and medical statistics studies of lung cancer and indoor radon in different regions of the world make a relevant new combined analysis of residential exposure health effects. In particular, new data were obtained by means of a meta-analysis of case-control studies as well as taking into account a confounding effect of human papillomavirus infection in studies of geographically aggregated data.Materials and methods: Two sources of epidemiological data are considered: (1) studies of ecological design and (2) case-control studies. Ecological studies included the analysis performed for the USA counties and Russian oblasts with adjusting for the main confounders. Data on the case-control studies were gained from the meta-analysis of 31 individual studies with a weighting of obtained odds ratios according to the quality of radon exposure reconstruction and size of the reference group. Estimations of lung cancer excess relative risk (ERR) associated with indoor radon exposure are combined.Results: Two types of epidemiological study design provided generally consistent EER estimations. The combined value of ERR due to radon exposure is 0.14 (90% CI: 0.10–0.18) per 100 Bq/m3.Conclusion: Available geographically aggregated data in regions of Russia and the United States and the meta-analysis of case-control studies conducted in a large number of countries confirm the association of lung cancer with indoor radon exposure.

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Variance of indoor radon concentration: Major influencing factors

Cited by 45 publications

References 20 publications

Survey of indoor radon (Rn-222) entry and concentrations in different types of building in Kalisz, Poland

Survey of indoor radon (Rn-222) entry and concentrations in different types of building in Kalisz, Poland

Numerical investigation of radon dispersion and dose assessment for typical ventilation schemes with an air purifier

Combined analysis of onco-epidemiological studies of the relationship between lung cancer and indoor radon exposure

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