Indoor Radon Concentration Levels in Najran Region, Saudi Arabia

Alyami, S. H.; Al-Ghamdi, Saleh; Baig, M. R.; AlGarawi, M. S.; Yahya, A. K.; Alam, Shah

doi:10.1063/1.3469695

Cited by 5 publications

(3 citation statements)

References 4 publications

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“…This is expected because most of these detectors were placed in office rooms and lab rooms, in computer labs and handicraft labs in girls' elementary schools, which had poor ventilation, because of absence of succession fans. A nationwide representative radon survey has not been carried out in Saudi Arabia but small-scale local or extended radon surveys in Saudi dwellings have been reported [21][22][23][24][25][26][27].…”

Section: Experimental Details and Resultsmentioning

confidence: 99%

Investigating Indoor Radon Levels and Influencing Factors in Primary Schools of Zulfi City, Saudi Arabia

Al-Ghamdi¹,

AlGarawi²,

Al-Mosa³

et al. 2011

AIP Conference Proceedings

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Measurement of indoor Concentrations were performed in Zulfi city of Saudi Arabia, using CR-39 track etch detectors .This investigation focused on the influence of different parameters, namely different locations, school categories, school building types, and room type as well as on the existence of differences in radon concentration at floor levels. We divided the Zulfi city into five regions, keeping in mind their geographical locations between Tuwaiq Mountains and Al-Thuwayrat sands. The measured average radon concentrations for regions 1-5 respectively are: 87.0 ± 14.2 Bq/m 3 , 83.4 ± 6.0 Bq/m 3 , 61.6 ± 6.4 Bq/m 3 , 63.7 ± 5.4 Bq/m 3 and 87.5 ± 6. Bq/m 3 and the minimum concentrations are 28.0 Bq/m 3 , 5.5 Bq/m 3 , 1.1 Bq/m 3 , 1.0 Bq/m 3 and 24 Bq/m 3 respectively. These results are still within normal limits and below the action level of 148 Bqm -3 set by the U.S. Environmental Protection Agency (EPA). A test of significance using Minitab program was applied to investigate if radon levels in regions are significantly different from each other. We tried all combinations, and found the following results. The "within regions" (different location) test yielded, region 2 is not significant versus region" 1" (p=0.783) and versus region "5" (P=0.646) , whereas it is significant versus region "3" ( P=0.0160) and also versus region "4" (p=0.018). We investigated government and rented school's building also and none was found significantly different (p=0.052). Floors of the same building were tested in order to examine the radon concentration as a function of storey level. No significant difference was observed at floor levels (p=0.009). When girl's schools versus Boys and kindergartens schools were tested they were found significantly different. It is believed that this significant difference is due to geographical nature of the area, since most of the girl's schools were selected from regions 2 and 3, these regions are relatively close to the Tuwaiq mountains whereas other regions are near to the Al-Thuwayrat sands.

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Section: Experimental Details and Resultsmentioning

confidence: 99%

Investigating Indoor Radon Levels and Influencing Factors in Primary Schools of Zulfi City, Saudi Arabia

Al-Ghamdi¹,

AlGarawi²,

Al-Mosa³

et al. 2011

AIP Conference Proceedings

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“…There are also other studies deals with radon in Saudi Arabia cities [8]. In addition, there are academic programs in Saudi unversities concerened with the concentration of radon levels in areas in the Kingdom [9,10]. In addition to environmental value of the present paper, the results will be obtained are considered to be essential in analyzing any data for future activities in this field.…”

Section: Introductionmentioning

confidence: 99%

Measurement of radon concentrations in soil and the extent of their impact on the environment from Al-Qassim, Saudi Arabia

Alharbi¹,

Abbady²

2013

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Soil gas radon ²²²Rn concentration was measured at 12 location in the Al-Qassim area, using radon gas analyzer-type Alpha GUARD 2000 PRQ from Genitron Instruments (Germany). In each location four different depths were taken for soil gas measurements, staring from the ground sur- face. The results suggested that the largest con- centration was 340 ± 22 Bq/m³ for 60cm depth at in Al-Tarfia point sample P3, and the smallest concentration was 26 ± 5 Bq/m³ for surface 0 cm depth at El-Bakria, point sample P5. The results obtained from this study indicate that the region has background radioactivity levels within the natural limits.

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“…Determination of the specific activity concentration of radon in soil is useful, because radon concentration in soil may provide a basis for the prediction of the radon built in cretin areas or regions. A number of studies on the level of radon in Saudi Arabia have been completed but are still limited (Abu-Jarad & Al-Jarallah, 1986;Al-Ghamdi et al, 2011a, 2011b, 2014Al-Jarallah et al, 2003;Alyami et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Soil radon detection using active scintillation cell

Abdalla

Ismail

Madiy

2021

Journal of Radiation Research and Applied Sciences

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The paper herein is intended to present the registration efficiency of 300A alpha-scintillation active cell and its application in the field of soil radon detection. In this work, a radon chamber based on a natural radon source has been constructed. This chamber allows calibration of the active scintillation cell under flow-through condition. Radon source has been designed, constructed, and the radon concentration output has been measured. It has been observed that a steady radon concentration can be obtained inside the chamber after a period longer than 30 days. The steady radon concentration inside the chamber is equal to 123.58 Bq/m 3. It is found that the registration efficiency and the sensitivity of the cell are equal to 0.69 and 1.243 CPM/pCi/l, respectively. After determining the calibration parameters of the cell, soil radon gas survey was carried out in the university city of Najran. It is found that the average radon activity concentration in the tested area is equal to 1332 ± 66 Bq/m 3. Results of sensitivity and efficiency evaluation, along with radon measurements, are addressed and thoroughly discussed.

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Indoor Radon Concentration Levels in Najran Region, Saudi Arabia

Cited by 5 publications

References 4 publications

Investigating Indoor Radon Levels and Influencing Factors in Primary Schools of Zulfi City, Saudi Arabia

Investigating Indoor Radon Levels and Influencing Factors in Primary Schools of Zulfi City, Saudi Arabia

Measurement of radon concentrations in soil and the extent of their impact on the environment from Al-Qassim, Saudi Arabia

Soil radon detection using active scintillation cell

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