International Journal of Science and Research (IJSR)

International Journal of Science and Research (IJSR)
Since Year 2012 | Open Access | Double Blind Reviewed

ISSN: 2319-7064




Downloads: 2

Research Paper | Physics Science | Saudi Arabia | Volume 10 Issue 12, December 2021


Assessment of Indoor Radon Levels in Student Lecture Halls in Umm Al Qura University, Makkah, KSA

R. A. Hassan [2]


Abstract: Radiation and radioactive isotopes form part of our natural environment. Elevated levels of these radioactive isotopes in the environment can pose a threat to our health. One of naturally occurring radioactive gas is Radon (222Rn). Radon is a colorless, odorless, and tasteless gas. 222Rn is the second leading cause of lung cancer after smoking, and may pose a significant long-term risk for student, who spend long time in class and halls. In the current work, radon concentrations were measured for one day run in 28 student lecture halls at Umm Al-Qura University-Makkah, Saudi Arabia. Radon was measured with a portable Radon counter (Rad 7 Instrument, Durridge-USA), which was placed on the middle of student halls at a height of about 0.85 m. 222Rn gas levels were registered in Becquerels (Bq/m3). The measured concentration of radon in the air of halls ranged from 15.6 ? 8.65 Bq/m3 to 24.8 ? 10.4 Bq/m3 with a mean of 19.8 ? 2.919 Bq/m3, while that of the progeny of radon varied from 0.00173 to 0.00276 WLM Y-1 (average: 0.00213). The mean indoor concentration of radon was considerably less than the lower levels prescribed by EPA (148 Bq/m3), EEC (400 Bq/m3), WHO (100 Bq/m3), ICRP (200?600 Bq/m3) and NRPB (200 Bq/m3). The mean annual effective dose calculated 0.012 mSv y?1, which is less than the UNSCEAR and WHO recommended global lower average dose value of 1 mSv/y. The hazard indices (PAEC, and CPPP) values were lower than the permissibility limit value.


Keywords: indoor radon; Umm Al Qura University; student halls; Rad 7


Edition: Volume 10 Issue 12, December 2021,


Pages: 1005 - 1009


How to Cite this Article?

R. A. Hassan, "Assessment of Indoor Radon Levels in Student Lecture Halls in Umm Al Qura University, Makkah, KSA", International Journal of Science and Research (IJSR), Volume 10 Issue 12, December 2021, pp. 1005-1009, https://www.ijsr.net/get_abstract.php?paper_id=SR211221165703

How to Share this Article?







Similar Articles with Keyword 'indoor radon'

Downloads: 104

Research Paper, Physics Science, Iraq, Volume 4 Issue 1, January 2015

Pages: 2465 - 2467

Measurement of Indoor Radon Concentration in Dwellings of Koya Using Nuclear Track Detectors

Zakariya A. Hussein

Share this Article

Downloads: 106

Research Paper, Physics Science, Iraq, Volume 7 Issue 4, April 2018

Pages: 1679 - 1687

Determination of Indoor Radon Concentration in Some Buildings at Tikrit University by using CR-39 Detector

Fareed M. Mohammed [3] | Khalid Hadi Mahdi [3] | Shakir M. AL-Jobori [2] | Bilal Kareem Enzi

Share this Article


Top