Study of radium content and radon exhalation rates in soil samples of northern India

Khan, M. Shakir; Srivastava, D.S.; Azam, Ameer

doi:10.1007/s12665-012-1581-7

Cited by 50 publications

(18 citation statements)

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“…The rate at which radon escapes or emanates from the soil is termed the radon emanation rate or the radon exhalation rate. Radon exhalation is a complex phenomenon depending upon a number of parameters such as radium content in soil, soil morphology, soil grain size, soil moisture, temperature, atmospheric pressure, and rainfall (Khan, Srivastava, & Azam, 2012). Such studies can be useful for the assessment of public radiation dose and performance of epidemiology as well as for keeping reference data records, to ascertain changes in the environmental radioactivity due to industrial, nuclear and other human activities (Singh, Singh, Singh, & Bajwa, 2009).…”

Section: Introductionmentioning

confidence: 99%

A study of radon emitted from building materials using solid state nuclear track detectors

Amin

2015

Journal of Radiation Research and Applied Sciences

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Available online xxxKeywords: RadonExhalation rates Radium content Effective doseBuilding materials a b s t r a c t Radon is a natural radioactive gas derived from geologic materials. Inhalation of the shortlived decay products of radon has been linked to an increase in the risk of developing lung cancers if present at elevated levels. Accurate knowledge of exhalation rate plays an important role in characterization of the radon source strength in some building materials.For this purpose, in this study the Can Technique using CR-39 plastic track detectors was used to measure radium content and exhalation rates of radon in building samples collected from Jizan districts-a province in southern Saudi Arabia. The values of effective radium content are found to vary from 0.21 to 2.2 Bq kg À1 with a mean value of 0.92 Bq kg À1 and a standard deviation of 0.81. All the values of radium content in all samples under test were found to be quite lower than the permissible value of 370 Bq kg À1 recommended by Organization for Economic Cooperation and Development. The values of mass exhalation rates of radon vary from 1.6 to 16.7 mBq kg À1 h À1 with a mean value of 6.9 mBq kg À1 h À1 , while the surface exhalation rates vary from 29.7 to 998.9 mBq m À2 h À1 with a mean value of 219.6 mBq m À2 h À1 . Alpha index and annual effective doses have also been estimated.

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Section: Introductionmentioning

confidence: 99%

A study of radon emitted from building materials using solid state nuclear track detectors

Amin

2015

Journal of Radiation Research and Applied Sciences

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“…Uranium occurs naturally in low concentrations (a few parts per million) in soil, rock, surface water, and groundwater. It is a relatively reactive element which combines with non-metals such as oxygen, sulfur, chlorine, fluorine, phosphorus, and bromine [1]. Naturally, Uranium exists as three isotopes 234 U, 235 U and 238 U with a relative abundance of 0.0055, 0.720 and 99.29%, respectively [2].…”

Section: Introductionmentioning

confidence: 99%

Radon in Foods

Al-Naggar¹,

Shabaan²

2020

Recent Techniques and Applications in Ionizing Radiation Research

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This chapter show the natural of radioactivity as alpha particle which produce from decaying of radium to radon so in this chapter describe the radon in some types of household food (coffee, tea, powder milk, rice, flour, cornstarch, and powder coconut) and different types of salt by using Solid State Nuclear Track Detectors (SSNTD), were analyzed by closed-can technique (CR-39). Many food items contain natural sources of salt. Salt analysis is very important due to its high consumption by the population and for its medicinal use. Analysis the concentrations of Radon-222 and Radium-226 for different types of household foods samples are very substantial for realizing the comparative contributions of specific substances to the whole radon content set within the human body. After study it is found that the average values of annual effective dose in mSv/y are within the recommended limit of ICRP values except its values for cornstarch and sugar are relatively high, and there are a wide range of variations in the values of transfer factor for Rn-222, and Ra-226 for all types.

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“…The rate of radon escape or emanation from the soil is the radon emanation rate or the radon exhalation rate. Radon emanation is a complex phenomenon depending upon a number of parameters such as radium content in soil, soil morphology, soil grain size, soil moisture, temperature, atmospheric pressure, and rainfall [11,12].…”

Section: Introductionmentioning

confidence: 99%

Using wall paints as a barrier to radon gas emission

Ridha¹,

Ayyed²

2018

J. Phys. Stud.

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This study was aimed to calculate the radon gas emitted from inner walls of buildings using twenty-six different paint types of different origin (Iraq, Jordan, Turkey, Greece, Norway, Egypt, Germany, United States and Emirates) for environmental protection. The Radon-Scout detector was placed in a plastic container and placed at painted wall samples. The range of radon exposure was between 9±1 and 57 ± 4 Bq · m −3 . Radon exposures decreased to +74% when they were measured in terms of radon shield percentage (RSP). Radon exposures increased when the RSP dropped to −68%. This study concluded that the relationship between radon concentration and RSP depends on the type and structure of paints used.

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Study of radium content and radon exhalation rates in soil samples of northern India

Cited by 50 publications

References 63 publications

A study of radon emitted from building materials using solid state nuclear track detectors

A study of radon emitted from building materials using solid state nuclear track detectors

Radon in Foods

Using wall paints as a barrier to radon gas emission

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