238U, 232Th content and radon exhalation rate in some Egyptian building materials

Radiological assessment of exposure doses and radon exhalation rates of building materials in Saudi Arabia

“…By reviewing the mass and surface exhalation rates, the obtained values for radon can be determined, and are shown in table 1. The value of this data is lesser than that mentioned in several works of literature [17,[19][20][21][22]. Radon exhalation rates observed in the current study are also quite below the world average of 57,600 mBq⋅m −2 ⋅h −1 (0.016 Bq⋅m 2 ⋅s −1 ) and hence will not cause any health hazards to residents [20].…”

“…The surface exhalation rate E x (S) of the sample for the release of radon is calculated using Equation (10): [17].…”

“…To determine the uranium concentration C U in parts-per-million (ppm) of the building material samples, Equation (12) is used [17].…”

Study of radon dispersion in typical dwelling using CFD modeling combined with passive-active measurements

“…The radon exhalation from walls, floor and ceiling has been measured for this house using solid state nuclear track detectors (SSNTD) technique that is widely used to measure radon/thoron, uranium and thorium in various samples (Kumar and Chauhan, 2013;Moharram et al, 2012;Oufni et al, 2011). This technique has been well documented, and has found wide application (Oufni and Misdaq, 2001;Oufni, 2003).…”

Measurement of Radon Exhalation Rate in Some Building Materials Using Nuclear Track Detectors

“…Ionizing radiation levels in buildings related to radionuclide content in building material samples is clearly of fundamental importance in the assessment of population exposure as most of the residents spend about 80% of their time indoors [5].…”