Comparative Measurements of Radon Concentration in Soil Using Passive and Active Methods in High Level Natural Radiation Area (HLNRA) of Ramsar
Background: Radon and its daughters are amongst the most important sources of natural exposure in the world. Soil is one of the signifcant sources of radon/thoron due to both radium and thorium so that the emanated thoron from it may cause in creased uncertainties in radon measurements. Recently,...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Shiraz University of Medical Sciences
2013-12-01
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| Series: | Journal of Biomedical Physics and Engineering |
| Subjects: | |
| Online Access: | http://www.jbpe.org/Journal_OJS/JBPE/index.php/jbpe/article/view/269 |
| _version_ | 1811310312794619904 |
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| author | Amanat B Faghihi R Hosseini Pooya SM Kardan MR |
| author_facet | Amanat B Faghihi R Hosseini Pooya SM Kardan MR |
| author_sort | Amanat B |
| collection | DOAJ |
| description | Background: Radon and its daughters are amongst the most important sources of
natural exposure in the world. Soil is one of the signifcant sources of radon/thoron
due to both radium and thorium so that the emanated thoron from it may cause in
creased uncertainties in radon measurements. Recently, a diffusion chamber has been
designed and optimized for passive discriminative measurements of radon/thoron
concentrations in soil.
Objective: In order to evaluate the capability of the passive method, some com
parative measurements (with active methods) have been performed.
Method: The method is based upon measurements by a diffusion chamber, includ
ing two Lexan polycarbonate SSNTDs, which can discriminate the emanated radon/
thorn from the soil by delay method. The comparative measurements have been done
in ten selected points of HLNRA of Ramsar in Iran. The linear regression and cor
relation between the results of two methods have been studied.
Results: The results show that the radon concentrations are within the range of
12.1 to 165 kBq/m3 values. The correlation between the results of active and passive
methods was measured by 0.99 value. As well, the thoron concentrations have been
measured between 1.9 to 29.5 kBq/m3 values at the points.
Conclusion: The sensitivity as well as the strong correlation with active mea
surements shows that the new low-cost passive method is appropriate for accurate
seasonal measurements of radon and thoron concentration in soil. |
| first_indexed | 2024-04-13T09:56:57Z |
| format | Article |
| id | doaj.art-a0c67c6aa6f1425c9e273b323df2fe1e |
| institution | Directory Open Access Journal |
| issn | 2251-7200 2251-7200 |
| language | English |
| last_indexed | 2024-04-13T09:56:57Z |
| publishDate | 2013-12-01 |
| publisher | Shiraz University of Medical Sciences |
| record_format | Article |
| series | Journal of Biomedical Physics and Engineering |
| spelling | doaj.art-a0c67c6aa6f1425c9e273b323df2fe1e2022-12-22T02:51:22ZengShiraz University of Medical SciencesJournal of Biomedical Physics and Engineering2251-72002251-72002013-12-0134139144Comparative Measurements of Radon Concentration in Soil Using Passive and Active Methods in High Level Natural Radiation Area (HLNRA) of RamsarAmanat B0 Faghihi R1Hosseini Pooya SM2Kardan MR3Department of physics, Payame Noor University, Po Box 19395-3697, Tehran, IranRadiation Research Center, Shiraz University, Shiraz, Iran \ Nuclear Engineering Departments, Shiraz University, Shiraz, Iran *Corresponding author: MR Kardan Radiation Application School, Nuclear Sciences and Technology Institute, Tehran, Iran E-mail: mkardan@aeoi. org.ir ABSTRACT Background: Radon and its daughters are amongst the most important sources of natural exposure in the world. Soil is one of the signifcant sources of radon/thoron due to both radium and thorium so that the emanated thoron from it may cause iRadiation Application School, Nuclear Sciences and Technology Institute, Tehran, Iran \ Iran Nuclear Regulatory Authority, Tehran, IranRadiation Application School, Nuclear Sciences and Technology Institute, Tehran, Iran \ Iran Nuclear Regulatory Authority, Tehran, IranBackground: Radon and its daughters are amongst the most important sources of natural exposure in the world. Soil is one of the signifcant sources of radon/thoron due to both radium and thorium so that the emanated thoron from it may cause in creased uncertainties in radon measurements. Recently, a diffusion chamber has been designed and optimized for passive discriminative measurements of radon/thoron concentrations in soil. Objective: In order to evaluate the capability of the passive method, some com parative measurements (with active methods) have been performed. Method: The method is based upon measurements by a diffusion chamber, includ ing two Lexan polycarbonate SSNTDs, which can discriminate the emanated radon/ thorn from the soil by delay method. The comparative measurements have been done in ten selected points of HLNRA of Ramsar in Iran. The linear regression and cor relation between the results of two methods have been studied. Results: The results show that the radon concentrations are within the range of 12.1 to 165 kBq/m3 values. The correlation between the results of active and passive methods was measured by 0.99 value. As well, the thoron concentrations have been measured between 1.9 to 29.5 kBq/m3 values at the points. Conclusion: The sensitivity as well as the strong correlation with active mea surements shows that the new low-cost passive method is appropriate for accurate seasonal measurements of radon and thoron concentration in soil.http://www.jbpe.org/Journal_OJS/JBPE/index.php/jbpe/article/view/269RadonRamsarPassive Detectors |
| spellingShingle | Amanat B Faghihi R Hosseini Pooya SM Kardan MR Comparative Measurements of Radon Concentration in Soil Using Passive and Active Methods in High Level Natural Radiation Area (HLNRA) of Ramsar Journal of Biomedical Physics and Engineering Radon Ramsar Passive Detectors |
| title | Comparative Measurements of Radon Concentration in Soil Using Passive and Active Methods in High Level Natural Radiation Area (HLNRA) of Ramsar |
| title_full | Comparative Measurements of Radon Concentration in Soil Using Passive and Active Methods in High Level Natural Radiation Area (HLNRA) of Ramsar |
| title_fullStr | Comparative Measurements of Radon Concentration in Soil Using Passive and Active Methods in High Level Natural Radiation Area (HLNRA) of Ramsar |
| title_full_unstemmed | Comparative Measurements of Radon Concentration in Soil Using Passive and Active Methods in High Level Natural Radiation Area (HLNRA) of Ramsar |
| title_short | Comparative Measurements of Radon Concentration in Soil Using Passive and Active Methods in High Level Natural Radiation Area (HLNRA) of Ramsar |
| title_sort | comparative measurements of radon concentration in soil using passive and active methods in high level natural radiation area hlnra of ramsar |
| topic | Radon Ramsar Passive Detectors |
| url | http://www.jbpe.org/Journal_OJS/JBPE/index.php/jbpe/article/view/269 |
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