Estimation of unattached and aerosol-attached activities of airborne short-lived radon progeny in indoor environments

Abdo, Maged A. S.; Boukhair, Aziz; Fahad, Mohammed; Ouakkas, Saad; Arhouni, Fatima Ezzahra; Hakkar, Mohammed; Belahbib, Laila; Al-Suhbani, Musherah Naji

doi:10.1016/j.jenvrad.2021.106665

Cited by 9 publications

(2 citation statements)

References 35 publications

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“…Ventilation, either mechanically or through opening windows, is simple and has proven to be a dominant human-influenced factor in controlling indoor radon levels [118,123,131,[213][214][215][216][217], and it is even more effective than using a building mate-rial low in uranium and thorium [214]. However, cost-effectiveness should be borne in mind, as more fresh air requires enhanced heating in the wintertime [218].…”

Section: Ventilationmentioning

confidence: 99%

Radon and Its Short-Lived Products in Indoor Air: Present Status and Perspectives

Vaupotič

2024

Sustainability

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Initially, basic equations are given to express the activity concentrations and concentrations of potential α-energies of radon (222Rn) and thoron (220Tn) and their short-lived products in indoor air. The appearance of short-lived products as a radioactive aerosol is shown, and the fraction of the unattached products is particularly exposed, a key datum in radon dosimetry. This fundamental part is followed by giving the sources of radon and thoron indoors, and thus, their products, and displaying the dependence of their levels on the ground characteristics, building material and practice, and living–working habits of residents. Substantial hourly, daily, and seasonal changes in their activity concentrations are reviewed, as influenced by meteorological parameters (air temperature, pressure, humidity, and wind speed) and human activity (either by ventilation, air conditioning and air filtration, or by generating aerosol particles). The role of the aerosol particle concentration and their size distribution in the dynamics of radon products in indoor air has been elucidated, focusing on the fraction of unattached products. Intensifying combined monitoring of radon short-lived products and background aerosol would improve radon dosimetry approaches in field and laboratory experiments. A profound knowledge of the influence of meteorological parameters and human activities on the dynamics of the behaviour of radon and thoron accompanied by their products in the air is a prerequisite to managing sustainable indoor air quality and human health.

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Section: Ventilationmentioning

confidence: 99%

Radon and Its Short-Lived Products in Indoor Air: Present Status and Perspectives

Vaupotič

2024

Sustainability

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“…It has to be emphasized that although the dose is mostly due to inhaled radon progeny (and its characteristics) rather than to radon, some studies [15][16][17] show that, in domestic ambient air, changes in ventilation rate produce opposite variations in the equilibrium factor F (i.e. the ratio between radon progeny and radon gas concentration) and in the unattached fraction, so that the absorbed dose to the lung remains relatively constant at a given radon concentration.…”

Section: Radon Risk Estimationmentioning

confidence: 99%

Indoor Radon Concentration and Risk Estimation: the EURA PROJECT

Barca¹,

Bjosvik

Edman³

et al. 2021

J. Hum. Earth Future

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The indoor radon concentration level has been monitored in selected locations in four European countries (Iceland, Italy, Norway, and Sweden) during a yearlong measurement campaign using time-integrated passive radon dosimeters containing CR-39 track detectors. The measurements were carried out in private houses and public buildings like schools, for an exposure time of up to 6 months for each detector. Experimental data shows a great variation between different geographic areas, and often the average levels are over the acceptable radon limit of 300 Bq/m3recommended by the International Commission on Radiological Protection (ICRP). To investigate a relationship between indoor radon exposure and lung cancer, estimating the cumulative levels of exposure to indoor radon for an individual or population is necessary. We analyse the data sets and investigate the factors influencing indoor radon concentrations in order to determine the best use of the experimental information. The results show that the variables associated with indoor radon levels are strictly linked to the soil geology. Analyzing the data sets enables improved assessment of radon exposure in a given area. The average absorption effective dose equivalent for a person is computed, and the risk of lung cancer per year is evaluated. Doi: 10.28991/HEF-2021-02-04-01 Full Text: PDF

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Radon and Human Health

Sukanya

Joseph

2023

Environmental Radon

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Estimation of unattached and aerosol-attached activities of airborne short-lived radon progeny in indoor environments

Cited by 9 publications

References 35 publications

Radon and Its Short-Lived Products in Indoor Air: Present Status and Perspectives

Radon and Its Short-Lived Products in Indoor Air: Present Status and Perspectives

Indoor Radon Concentration and Risk Estimation: the EURA PROJECT

Radon and Human Health

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