Radon Concentrations Measurement in  Aljouf, Saudi Arabia Using Active Detecting Method

Alenezy, Mohammed D.

doi:10.4236/ns.2014.611086

Cited by 9 publications

(4 citation statements)

References 15 publications

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“…On the other hand, the present results showed that the measured concentration values of 222 Rn in Al-Kharj city are compatible with those measured in some other countries. Also, our result (19.23 Bq/m 3 ) is in a consistent with the other studies in Saudi Arabia (Abuelhia, 2017;Alenezy, 2014;Alghamdi & Aleissa, 2014;Alghamdi, Aleissa, & Al-Hamarneh, 2019;El-Taher et al, 2013;Mona, Al-Jarallah, & Rehman, 2005). It is observed that no average radon concentration is above the action levels that are recommended by ICRP (ICRP, 2010).…”

Section: Comparison With Studies In Saudi Arabia and Other Countriessupporting

confidence: 93%

Indoor radon levels, influencing factors and annual effective doses in dwellings of Al-Kharj City, Saudi Arabia

yousef

Zimami

2019

Journal of Radiation Research and Applied Sciences

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Inhalation of radon gas and its decay products ranked as a main source of natural radiation exposure. It is considered as a major cause of lung cancer after cigarette smoking. There are some very important factors that strongly affect the indoor radon levels such as: indoor airconditions, ventilation systems, and meteorological factors. In this article, we determined the indoor radon concentration and studied the seasonal variations of indoor radon levels to evaluate the annual effective dose received by the inhabitants in Al-Kharj city, Saudi Arabia. For this study, 84 houses were chosen and RAD 7 detector was used to examine cumulative radon exposure concentration from September 2014 to November 2017. Our measurements showed an obvious difference between radon concentration in winter (24.33 ± 11.10 Bq/m 3 ) and in summer (14.54 ± 5.50 Bq/m 3 ), while the average concentration in spring and autumn was very much close to the average annual radon concentration (19.23 ± 8.13 Bq/m 3 ). The average annual effective dose was found to be 0.49 mSv/y. The study revealed that the average indoor radon concentration as well as the annual effective dose rate is found to be less than the action level recommended by ICRP.

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Section: Comparison With Studies In Saudi Arabia and Other Countriessupporting

confidence: 93%

Indoor radon levels, influencing factors and annual effective doses in dwellings of Al-Kharj City, Saudi Arabia

yousef

Zimami

2019

Journal of Radiation Research and Applied Sciences

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“…On the other hand, there have been some small studies using active devices (mostly RAD7). For example, at Aljouf University, several offices were surveyed, and there was an average value of 12 Bq m −3 [136]. Abuelhia [137] reported an average radon concentration level of 19 Bq m −3 in apartments located in the city of Dammam (Eastern Province).…”

Section: Saudi Arabia (V)mentioning

confidence: 99%

Indoor Radon Research in the Asia-Pacific Region

Janik¹,

Bossew

Hasan

et al. 2023

Atmosphere

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Indoor radon is a major hazard to human health; it is one of the leading causes of lung cancer. Therefore, radon research in Asia has intensified recently due to the growing awareness of the harm that radon poses. An analysis of the collected literature data showed that in Asia–Oceania, some regions have—or are believed to have—little indoor radon problems due to climate and low Rn ground. It can be concluded that countries have their own approaches, techniques, and protocols. Data were not harmonized within each region; however, measurement techniques were compared by regional intercomparison exercises. The situation differs regarding studies on the usability of radon as a tracer or potential predictor of tectonic phenomena, as some countries are in seismically active zones, such as India, Taiwan, China, Japan, etc. India and Taiwan are global leaders in this research, as well as Italy, which is another seismically affected country. We provide an overview of radon-related surveying and research activities conducted in the western, southern, and eastern Asian regions over the past few years. Additionally, we observed that the number of indoor radon measurements per million inhabitants increases as the human development index (HDI) increases.

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“…The interior of the RAD-7 instrument contains a hemisphere of 0.7 l volume with an ion-implanted silicon solid-state 𝛼 −detector, and an air pump to be found at the centre. A representation of the measurement chamber with the detector is shown in Figure 2 [14]. The high voltage power circuit charges the inside conductor to a potential of 2 000 to 2 500 V, creating an electric field throughout the volume of the detector [15].…”

Section: Alpha-spectrometry Using Solid-state Alpha Detectorsmentioning

confidence: 99%

Meteorological effects on the performance of a solid-state α ― detector measuring water samples with predefined radon concentration

Masevhe,

Mavunda,

Connell

2023

Preprint

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The current study validates an α-spectrometry method by assessing the functionality and response of a solid-state alpha detector to known Radon concentrations, outdoor weather conditions and varied sample volumes. These all have an influence on the sample’s behaviour inside the detector. Five samples of water with known radon concentrations (ranged from 90.66±7.20 mBq.l−1 to 314.65±24.6 mBq.l− 1) were used. The experimental setup used a radon-stripping unit connected to a continuous radon monitor, which measured the 222Rn in the water by counting α-particles emitted by its progeny in secular equilibrium. The effects of meteorological parameters such as the sample concentrations and volume, internal temperature and relative humidity inside the detector were observed. The analysis of the fluctuations of temperature and relative humidity in the detection chamber were found to be in agreement with theoretical predictions and outcomes of other previous studies. To calibrate the detector of choice, the same standard samples were measured by a liquid scintillation counter (LSC) which was considered as a reference detector in the current study. The two techniques gave similar trends in the results. The LSC results appeared to be consistently lower than those of the α-spectrometry as seen by the RAD-7 device. The α-spectrometry system based on a solid-state detector had a good resolution of the peaks (FWHM of 18.61 keV and 20.93 keV) which was better than that of LSC (FWHM 166 keV) whose peaks could not be resolved. The energy-tailing of the LCS spectrum caused by Compton Scattering led to a higher count-rate of 4.11 cpm for the LSC compared to 0.71 cpm for the RAD-7. The study demonstrated that α-spectrometry method as deployed in the RAD-7 device is the most suitable equipment for the measurement of radon concentration in water because of its superior sensitivity.

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Radon Concentrations Measurement in Aljouf, Saudi Arabia Using Active Detecting Method

Cited by 9 publications

References 15 publications

Indoor radon levels, influencing factors and annual effective doses in dwellings of Al-Kharj City, Saudi Arabia

Indoor radon levels, influencing factors and annual effective doses in dwellings of Al-Kharj City, Saudi Arabia

Indoor Radon Research in the Asia-Pacific Region

Meteorological effects on the performance of a solid-state α ― detector measuring water samples with predefined radon concentration

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