A Review of Indoor and Outdoor Radon Equilibrium Factors-part I: 222Rn

Health Physics
Jing Chen, Naomi H Harley

Abstract

Radon exposure limits are given in terms of radon gas concentration in the air. However, in the calculation of radon dose to the lung, the radon equilibrium equivalent concentration is used. The measured equilibrium factor times the measured radon gas concentration estimates the equilibrium equivalent concentration. Therefore, the equilibrium factor is an important factor in radon dose calculations. A review of published measurements of equilibrium factors shows a range of values reported in studies from more than 20 countries, measured in indoor residential, indoor public, and outdoor environments. Values for Rn are reported and discussed here, with special attention paid to results from India and China, where measured equilibrium factors are reported for hundreds and thousands of households, respectively. The wide range of equilibrium factors suggests that location-specific values are more appropriate than a worldwide average value in the calculation of lung bronchial dose.

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Citations

Jan 10, 2019·Radiation Protection Dosimetry·Jing Chen
May 22, 2019·Radiation Protection Dosimetry·Oladele Samuel AjayiChidiebere Goodluck Dike
Jun 6, 2019·Radiation Protection Dosimetry·Dafina Kikaj, Janja Vaupotič
Aug 28, 2018·Health Physics·Jing Chen, Naomi H Harley
May 7, 2020·International Journal of Environmental Research and Public Health·Yasutaka OmoriShinji Tokonami
Dec 10, 2020·Journal of Environmental and Public Health·Akeel T Al-KazwiniTiba R Abdulkareem
Nov 17, 2020·Journal of Radiological Protection : Official Journal of the Society for Radiological Protection·Jing Chen
Jul 21, 2020·Heliyon·Kerubo Makori RuthWycliffe Arika
Apr 20, 2021·Health Physics·Ganiyu AsuniSalim Khasawinah
Aug 3, 2021·Environmental Monitoring and Assessment·Dmitrii A Kremenchutskii
Nov 6, 2021·Environmental Monitoring and Assessment·Md Mahamudul HasanTakeshi Iimoto

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