Ionizing radiation has been proved a major stress that can induce carcinogenesis. Among these ionizing radiations the most significant one is radon which is a source of 43% of the annual dose averaged over the population of the world. If it is present in enhanced level beyond maximum permissible limit, it may cause lung cancer. In the present work a set of indoor radon measurements has been carried out in some houses of Debresina district, Ethiopia using cellulose nitrate LR-115 type-II plastic track detectors in the bare mode. The detectors were fixed in the houses for one month to be exposed with indoor radon from February to March 2018. Etching of detectors was done with 2.5 N NaOH solution for 75 minutes at 60°C in the Soil physics laboratory and counting of tracks recorded was done using optical microscope in the Department of Earth Science, Bahirdar University. It is found that the value of radon concentration in those dwellings ranges from 12.24 to 251.94 Bq/m3 with an average of 102.87 Bq/m3 and standard deviation of 81.97 Bq/m3. The annual effective dose rates are found to vary from 0.31 to 6.29 mSv y-1 with an average of 2.57 mSv y-1 and a standard deviation of 2.05 mSv y-1. The indoor radon concentration has been found to have strong correlation with the ventilation condition. Ventilated houses have shown less radon concentration than unventilated houses. Though most of the indoor radon concentration values measured are well within the recommended action level of ICRP, more than half of these values are above the new recommended level of WHO.
| Published in | World Journal of Applied Physics (Volume 5, Issue 3) |
| DOI | 10.11648/j.wjap.20200503.11 |
| Page(s) | 34-38 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
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Copyright © The Author(s), 2020. Published by Science Publishing Group |
Ionizing Radiations, LR-115 Type-II, Radon Concentration, Annual Effective Dose Rate, Ventilation Condition
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APA Style
Abiy Tamiru Beshah, Tesfaye Dagne Muhe. (2020). Radon Concentration and Its Ventilation Dependence Measured in Some Dwellings of Debresina, Ethiopia. World Journal of Applied Physics, 5(3), 34-38. https://doi.org/10.11648/j.wjap.20200503.11
ACS Style
Abiy Tamiru Beshah; Tesfaye Dagne Muhe. Radon Concentration and Its Ventilation Dependence Measured in Some Dwellings of Debresina, Ethiopia. World J. Appl. Phys. 2020, 5(3), 34-38. doi: 10.11648/j.wjap.20200503.11
AMA Style
Abiy Tamiru Beshah, Tesfaye Dagne Muhe. Radon Concentration and Its Ventilation Dependence Measured in Some Dwellings of Debresina, Ethiopia. World J Appl Phys. 2020;5(3):34-38. doi: 10.11648/j.wjap.20200503.11
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Download@article{10.11648/j.wjap.20200503.11,
author = {Abiy Tamiru Beshah and Tesfaye Dagne Muhe},
title = {Radon Concentration and Its Ventilation Dependence Measured in Some Dwellings of Debresina, Ethiopia},
journal = {World Journal of Applied Physics},
volume = {5},
number = {3},
pages = {34-38},
doi = {10.11648/j.wjap.20200503.11},
url = {https://doi.org/10.11648/j.wjap.20200503.11},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.wjap.20200503.11},
abstract = {Ionizing radiation has been proved a major stress that can induce carcinogenesis. Among these ionizing radiations the most significant one is radon which is a source of 43% of the annual dose averaged over the population of the world. If it is present in enhanced level beyond maximum permissible limit, it may cause lung cancer. In the present work a set of indoor radon measurements has been carried out in some houses of Debresina district, Ethiopia using cellulose nitrate LR-115 type-II plastic track detectors in the bare mode. The detectors were fixed in the houses for one month to be exposed with indoor radon from February to March 2018. Etching of detectors was done with 2.5 N NaOH solution for 75 minutes at 60°C in the Soil physics laboratory and counting of tracks recorded was done using optical microscope in the Department of Earth Science, Bahirdar University. It is found that the value of radon concentration in those dwellings ranges from 12.24 to 251.94 Bq/m3 with an average of 102.87 Bq/m3 and standard deviation of 81.97 Bq/m3. The annual effective dose rates are found to vary from 0.31 to 6.29 mSv y-1 with an average of 2.57 mSv y-1 and a standard deviation of 2.05 mSv y-1. The indoor radon concentration has been found to have strong correlation with the ventilation condition. Ventilated houses have shown less radon concentration than unventilated houses. Though most of the indoor radon concentration values measured are well within the recommended action level of ICRP, more than half of these values are above the new recommended level of WHO.},
year = {2020}
}
TY - JOUR T1 - Radon Concentration and Its Ventilation Dependence Measured in Some Dwellings of Debresina, Ethiopia AU - Abiy Tamiru Beshah AU - Tesfaye Dagne Muhe Y1 - 2020/11/19 PY - 2020 N1 - https://doi.org/10.11648/j.wjap.20200503.11 DO - 10.11648/j.wjap.20200503.11 T2 - World Journal of Applied Physics JF - World Journal of Applied Physics JO - World Journal of Applied Physics SP - 34 EP - 38 PB - Science Publishing Group SN - 2637-6008 UR - https://doi.org/10.11648/j.wjap.20200503.11 AB - Ionizing radiation has been proved a major stress that can induce carcinogenesis. Among these ionizing radiations the most significant one is radon which is a source of 43% of the annual dose averaged over the population of the world. If it is present in enhanced level beyond maximum permissible limit, it may cause lung cancer. In the present work a set of indoor radon measurements has been carried out in some houses of Debresina district, Ethiopia using cellulose nitrate LR-115 type-II plastic track detectors in the bare mode. The detectors were fixed in the houses for one month to be exposed with indoor radon from February to March 2018. Etching of detectors was done with 2.5 N NaOH solution for 75 minutes at 60°C in the Soil physics laboratory and counting of tracks recorded was done using optical microscope in the Department of Earth Science, Bahirdar University. It is found that the value of radon concentration in those dwellings ranges from 12.24 to 251.94 Bq/m3 with an average of 102.87 Bq/m3 and standard deviation of 81.97 Bq/m3. The annual effective dose rates are found to vary from 0.31 to 6.29 mSv y-1 with an average of 2.57 mSv y-1 and a standard deviation of 2.05 mSv y-1. The indoor radon concentration has been found to have strong correlation with the ventilation condition. Ventilated houses have shown less radon concentration than unventilated houses. Though most of the indoor radon concentration values measured are well within the recommended action level of ICRP, more than half of these values are above the new recommended level of WHO. VL - 5 IS - 3 ER -
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