Results 181 to 190 of about 3,723 (222)

Radon exhalation from building materials for decorative use

Journal of Environmental Radioactivity, 2010
Long-term exposure to radon increases the risk of developing lung cancer. There is considerable public concern about radon exhalation from building materials and the contribution to indoor radon levels. To address this concern, radon exhalation rates were determined for 53 different samples of drywall, tile and granite available on the Canadian market ...
Jing, Chen, Naureen M, Rahman, Ibrahim, Abu Atiya   +2 more
openaire   +2 more sources

Radon exhalation rate in building materials

International Journal of Radiation Applications and Instrumentation. Part D. Nuclear Tracks and Radiation Measurements, 1991
Radon is present in trace amounts almost everywhere on the earth, being distributed in the soil, the ground water and in the lower atmosphere. Radon can originate from a deeply burried deposit and can migrate to the surface of earth by diffusion and transport process.
A. Rawat, P.J. Jojo, A.J. Khan, R.K. Tyagi, Rajendra Prasad   +4 more
openaire   +1 more source

Radon exhalation from granite countertops and expected indoor radon levels

Journal of Radioanalytical and Nuclear Chemistry, 2016
Radon (222Rn) exhalation rates from granite countertops were measured using a continuous radon monitor. The countertops could be separated in three groups according to radon their exhalation rates. However, even for a worst-case scenario (e.g. E ~ 1.10 Bq m−2 h−1, no air circulation and full tile home) the contribution to indoor radon concentration is ...
Sarrou, I., Pashalidis, Ioannis, Sarrou, I., Pashalidis, Ioannis   +3 more
openaire   +2 more sources

Radon exhalation from cement-based materials under accelerated carbonation

Environmental Science and Pollution Research, 2023
Cement-based materials manufactured from rocks and soils will release radon which is a carcinogen and affects indoor air quality. The alkaline cement-based material neutralizes with the acidic gas carbon dioxide in the air, reducing its pH value, known as carbonation.
Rong Yang, Jie Wang, Xiaowen Zhang, Jie Li, Mianbiao Chen   +4 more
openaire   +2 more sources

A new method for measuring radon exhalation

Journal of Geophysical Research: Oceans, 1983
A method for measuring radon exhalation based on the determination of radon profile into the soil by gamma spectrometry using an INa(Tl) detector is developed. Detection efficiency is determined by employing Monte Carlo method. Experimental results are described, and they show the workability of the method.
P. Fernandez, L. S. Quindos, J. Soto, E. Villar, D. Guedalia   +4 more
openaire   +1 more source

Measuring radon exhalation rate through three cycles

Journal of Instrumentation, 2012
This paper proposes that the radon exhalation rate can be calculated through three measurement cycles performed by a radon monitor based on the electrostatic collection method. The first cycle time is 20 min, the measured value in this cycle falls into disuse. The radon concentrations in the next two long cycles can be accurately measured.
Y Tan, D Xiao
openaire   +1 more source

Radon exhalation characteristics after pyrolysis of long flame coal

Science of The Total Environment, 2023
Coal pyrolysis is a important method for classifying and utilizing coal resources and contributes to enhanced comprehensive resource utilization. However, In high-temperature areas such as coal pyrolysis, there is an abnormal phenomenon release of radioactive gas radon, understanding the relationship between temperature and radon exhalation ...
Xin, Hu, Qiang, Sun, Qingmin, Shi, Nianqin, Wang, Jishi, Geng, Shengze, Xue   +5 more
openaire   +2 more sources

Application of the can technique and radon gas analyzer for radon exhalation measurements

Applied Radiation and Isotopes, 2003
A passive "can technique" and an active radon gas analyzer with an emanation container were applied for radon exhalation rate measurements from different construction materials, viz. five marble seven ceramic and 100 granite tiles used in Saudi Arabia.
, Fazal-ur-Rehman, M I, Al-Jarallah, M S, Musazay, F, Abu-Jarad   +3 more
openaire   +2 more sources

Radon and thoron exhalation from the ground

Journal of Geophysical Research, 1973
The rate of radon (222Rn) and thoron (220Rn) exhalation from the ground was measured in the yard of our laboratory to investigate effects of soil conditions on the exhalation; radon and thoron gases released from the ground were directly adsorbed on granular-activated charcoal, and the charcoal was subjected to γ ray spectrometry to estimate the ...
Kazuko Megumi, Tetsuo Mamuro
openaire   +1 more source

Study of radon exhalation from the soil

Journal of Radioanalytical and Nuclear Chemistry, 2017
The influence of meteorological parameters on radon exhalation rate was analyzed. The analyses show a significant influence of precipitation on radon exhalation rate. The highest exhalation rate was found during dry periods and the lowest during the periods of strong precipitation.
Monika Müllerová, Karol Holý, Pavol Blahušiak, Martin Bulko   +3 more
openaire   +1 more source