Determination of radon exhalation rates in soil samples using sealed can technique and CR-39 detectors

Thabayneh, Khalil M.

doi:10.1007/s40201-018-0298-2

Cited by 25 publications

(3 citation statements)

References 17 publications

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“…Solid state nuclear track detectors (SSNTD), due to their low sensitivity, are usually used for long integration timescales. Nuclear track detectors are placed inside the chamber and the number of tracks corresponds to the integrated exposure of a detector to a radon flux [93,161,162]. When specially designed discriminative Rn/Tn detectors are placed in the chamber, both radon and thoron fluxes can be measured [163].…”

Section: Integrating Measurementmentioning

confidence: 99%

Overview of Radon Flux Characteristics, Measurements, Models and Its Potential Use for the Estimation of Radon Priority Areas

et al. 2022

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Radon flux measurements provide information about how much radon rises from the ground toward the atmosphere, thus, they could serve as good predictors of indoor radon concentrations. Although there are many different mapping methods with many different input data, radon flux data are generally missing and are not included for the delineation of radon priority areas (RPA). The aim of this literature review is to investigate to what extent radon flux was used, or could be used, for the delineation of RPAs. Numerous factors influencing radon flux were identified, but quantifying their contribution to radon flux measurement still remains a challenge. Different methods and measuring devices were used for the determination of radon flux, thus it is necessary to identify possible inconsistencies in order to harmonise different radon flux measurements. Due to the complexity of radon flux measurements, only two countries were identified to have performed national surveys on outdoor radon, which were of much smaller scale compared to those on indoor radon. A positive correlation between radon flux and radon quantities, such as radon in soil gas and indoor radon, indicates that radon flux could be used as an input parameter for the estimation of RPA. By reviewing radon flux models, it was concluded that up-to-date modelled radon flux maps have reached excellent spatial resolution and will be further improved, hence, they could serve as an input for the estimation and delineation of RPA.

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Section: Integrating Measurementmentioning

confidence: 99%

Overview of Radon Flux Characteristics, Measurements, Models and Its Potential Use for the Estimation of Radon Priority Areas

et al. 2022

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“…This may be measured by either per unit mass or per unit surface area of the soil. Measuring the radon exhalation rate of soils and rocks is highly significant in studying radon health hazards, and understanding and minimizing the risk of radon exposure to humans (Thabayneh, 2018;Negm et al, 2019). Thus, this study aimed to determine the radon concentration and radon mass and surface exhalation rates of soil samples from the different districts of Khon Kaen Province, Thailand by using a bulk chamber and a RAD7 radon detector (Abbas et al, 2020;Mohammed et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Radon Exhalation Rates of Soil Samples from Khon Kaen Province, Thailand

Atyotha,

Thopan,

Fungdet

et al. 2022

MJST

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Radon, which can be also detected in water, forms naturally from the decay of uranium and radium found in different amounts in soil and rock. Radon from soil gases is the main cause of health hazards. Radon exhalation escapes from the ground into the air, where radon and radon progeny decays and produces radioactive particles. When inhaled, they can damage the deoxyribonucleic acid and potentially cause lung cancer. Hence, this study measured the radon exhalation rates in soil samples from 26 districts of Khon Kaen Province, Thailand by the active detector method. The closed-loop measurement system in the active detector was made up of the electronic radon detector and a bulk chamber in a 2.8-L volume. The measurement time for each sample was 24 h. Results showed that the radon concentration in soil samples varied from 5.60 to 67.10 Bq m-3 (average: 21.94±4.55 Bq m-3). The radon mass exhalation rates ranged from 7.34 to 17.51 mBq kg-1 h-1 (average: 11.39±3.38 mBq kg-1 h-1) while the radon surface exhalation rates were in the range of 0.29 to 1.31 mBq m-2 h-1 (average: 0.81±0.90 mBq m-2 h-1). The radon surface exhalation rate of the soil samples was below the average worldwide value of 57,600 mBq m-2 h-1 as set by the United Nations Scientific Committee on the Effects of Atomic Radiation. It was concluded that the soil from the province does not pose any radiological health hazard to the general public.

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“…The radon exhalation rate ERn (expressed in mBq m −2 s −1 ) describes the amount of radon gas present on the ground surface. The amount of radon present in the soil air depends on the activity concentration of Ra-226 in the examined region, characteristic geological soil properties of the region 1 , and the mode of soil use 2 . Currently in compliance with the EU Directive, the specific radon hazardous regions in Europe are specified and the problem of radon exposure for general population was highlighted.…”

Section: Introductionmentioning

confidence: 99%

Radon emission fluctuation as a result of biochar application into the soil

Szewczak

Jednoróg

Wołoszczuk

et al. 2021

Sci Rep

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The presented research was focused on the analysis of the impact of biochar application into the soil on the radon exhalation process as a new issue of radiation protection in agriculture. Field measurements of the radon exhalation rate utilizing two methods—active and passive as well as laboratory measurements of the radon emanation coefficient were performed. In laboratory a soil samples with sunflower husk biochar were analysed using the accumulation chamber technique. At the final step the assessment of the effective dose for humans coming from radon exhalation from soil depending on biochar dose applied were evaluated. The doses of biochar applied in the analysed experimental fields were 0, 20, 40, 60, 80, and 100 Mg ha−1. The results show that biochar application into the soil contribute to a decrease in the emanation coefficient from a value around 7% to less than 2% with a simultaneous decrease in the radon exhalation rate from 4.4 to 14.8 mBq m−2 s−1 when the biochar dose increase from 0 to 100 Mg ha−1.

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Determination of radon exhalation rates in soil samples using sealed can technique and CR-39 detectors

Cited by 25 publications

References 17 publications

Overview of Radon Flux Characteristics, Measurements, Models and Its Potential Use for the Estimation of Radon Priority Areas

Overview of Radon Flux Characteristics, Measurements, Models and Its Potential Use for the Estimation of Radon Priority Areas

Radon Exhalation Rates of Soil Samples from Khon Kaen Province, Thailand

Radon emission fluctuation as a result of biochar application into the soil

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