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An International Intercomparison of Soil Gas Radon and Radon Exhalation Measurements
Health Physics, 1998The Environmental Measurements Laboratory hosted the Sixth International Radon Metrology Programme Intercomparison Test and Workshop (IRMP6) from 12-15 June 1995. Thirty participants representing 24 different institutions from 11 countries attended. Laboratory exercises consisted of 220Rn and 222Rn concentration measurements from a source container ...
A R, Hutter, E O, Knutson
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Radon Exhalation from the Soil
Radiation Protection Dosimetry, 1988Abstract The exhalation of radon from the soil is the main source for high radon concentration in dwellings. A study of the mechanism of exhalation, its dependence on various parameters and the entry points for radon in houses are presented.
G. Keller, M. Schütz
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Radon exhalation measurements for environmental and geophysics study
Radiation Physics and Chemistry, 2014Abstract Transport of radon through materials is a process strongly influenced by several parameters characterizing the materials themselves, such as porosity, permeability, grain size, content of radionuclides and diffusion coefficient of this gas through the interstitial pores and/or fractures of material.
IMME', Giuseppina +3 more
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Application of the can technique and radon gas analyzer for radon exhalation measurements
Applied Radiation and Isotopes, 2003A 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 +3 more
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Radon exhalation from building materials for decorative use
Journal of Environmental Radioactivity, 2010Long-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
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Factors controlling measurements of radon mass exhalation rate
Journal of Environmental Radioactivity, 2005Radon mass exhalation rate of soil samples was measured using an exhalation chamber of 10 dm(3) volume and a Lucas cell. The results show that mass of sample, grain size and water content influence the radon mass exhalation rate. For soil of (226)Ra activity concentration about 2500 Bq kg(-1) and samples within the range from 0.20 kg to 0.50 kg, the ...
Chau Nguyen Dinh
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The Determination of Radon Exhalation Rates
Health Physics, 1983The exhalation of radon from porous materials like mining wastes and building materials can be determined by studying the growth of radon activity in vessels containing samples of the materials. It is demonstrated that the initial part of the activity growth curve determines the total free exhalation rate of the sample used, independently of container ...
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Field Macroradiography Measuring Radon Exhalation
Isotopenpraxis Isotopes in Environmental and Health Studies, 1978A macroradiographic technique for measuring radon exhalation of various soils in Hungary has been developed. The method is based on long-term simultaneous measurement of the alpha-activity of soil gas at numerous points of a given area with plastic nuclear track detectors. In the present work a two-year experience related to calibration measurements in
G. Somogyi +4 more
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A new method for measuring radon exhalation
Journal of Geophysical Research: Oceans, 1983A 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 +4 more
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Radon exhalation rate in building materials
International Journal of Radiation Applications and Instrumentation. Part D. Nuclear Tracks and Radiation Measurements, 1991Radon 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 +4 more
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