Radon exhalation from granite countertops and expected indoor radon levels

Sarrou, Iacovos; Pashalidis, Ioannis

doi:10.1007/s10967-016-5108-7

Cited by 5 publications

(3 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…texture, density, porosity, alteration, etc.) [16,32,36]. Some authors found a better correlation [30], but for exhalation rate lower than 2 Bq m -2 h −1 the relationship Ra/Rn becomes more dispersed and the correlation definitely lower.…”

Section: Correlation Between Radium Content and Radon Exhalation Ratementioning

confidence: 97%

Natural radioactivity and radon exhalation rate of Sardinian dimension stones

Dentoni

Pelo

Aghdam

et al. 2020

Construction and Building Materials

View full text Add to dashboard Cite

Due to the ever-growing public concern about radon risk arising from building materials, the radon exhalation rates and the natural radioactivity of eighteen dimension stones mostly used in Sardinia and widely exported worldwide have been estimated by means of laboratory tests. Some of the quarrying companies that operate within the Sardinian territory provided the samples to be tested, which include twelve granitoids, four pyroclastic rocks and two basalts. The Activity Concentration Index (I ɤ ), the External Radiation Hazard Index (H ex ) and the Radium equivalent activity (Ra eq ) were calculated for each rock sample under investigation, based on the estimated values of 222 Rn exhalation rate and 226 Ra, 232 Th and 40 K radioactivity concentration. A poor correlation between radon release rates and 226 Ra radioactivity concentrations was found. The contribution to indoor radon accumulation was also simulated for the stone with the highest 222 Rn exhalation rate and the resulting concentration compared with the limit value establish by the 2013/59/Euratom Directive. These findings can be extended to rocks formed in similar geodynamic settings that are likely to produce igneous rocks with similar petrographic and geochemical features.

show abstract

Section: Correlation Between Radium Content and Radon Exhalation Ratementioning

confidence: 97%

Natural radioactivity and radon exhalation rate of Sardinian dimension stones

Dentoni

Pelo

Aghdam

et al. 2020

Construction and Building Materials

View full text Add to dashboard Cite

show abstract

“…It is one of the potential dangerous radioactive elements, known to be the second cause of lung cancer in the general population after smoking [1]. It emits ionizing radiation and decays its short-lived progeny which are heavy metals such as polonium-218, lead-214, bismuth-214, polonium-214, lead-210, bismuth-210, polonium-210, and stable lead-206 [1][2][3][4][5][6][7]. When radon gas and its progeny attracted to particulates in air are inhaled by human beings, they are exhaled and remain in the lungs.…”

Section: Introductionmentioning

confidence: 99%

“…The radon is a major contributor to the annual effective dose from natural ionizing radiation [2,[5][6]. Because radon results from the natural decay of uranium, the main sources of which are in soils, rocks, plants, water, air, building materials, home accessories etc.…”

Section: Introductionmentioning

confidence: 99%

Measurement of 222Rn Exhalation Rate from Natural Rubber Latex Pillows Randomed from Online Market in Thailand

Raksawong

Sola²,

Samran³

et al. 2021

ASEAN Sci Tech Rept

View full text Add to dashboard Cite

Radon is a natural radioactive gas, and it is increasingly interesting worldwide because it affects the human healthy and increases lung cancer risk when people receive high concentrations over extended periods of time by inhalation. The study was to measure the radon concentration, determine the radon exhalation rate, and estimate annual effective dose level in order to set up a policy on controlling the contamination of radon in the natural rubber latex products in Thailand, and the radon concentrations were measured from natural rubber latex pillows randomized from online market in Thailand by closed chamber system technique with ATMOS 12 DPX. The results showed that the equilibrium radon concentrations were ranged between 11 ± 2 and 43 ± 5 Bqm–3 with an average value of 17 ± 9 Bqm–3. All measured radon concentrations were well below the allowed maximum contamination level of radon concentration in collected samples of 148 and 300 Bqm–3, recommended by the USEPA and the ICRP, respectively. The exhalation rates from natural rubber latex pillows were ranged 12 ± 3 and 60 ± 7 mBq m–2 h–1 with an average value of 25.7 ± 14.4 mBq m–2 h–1. The annual effective doses calculated for inhalation were between 0.12 ± 0.03 and 0.43 ± 0.05 mSv y–1, and also well lower than the annual effective dose for general public (1.0 mSv y–1) recommended by the ICRP.

show abstract