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Document Details
Document Type
:
Article In Journal
Document Title
:
Radon exhalation and natural radiation exposure in low ventilated rooms
Radon exhalation and natural radiation exposure in low ventilated rooms
Subject
:
physics
Document Language
:
English
Abstract
:
In the first part of this paper, the influence of radon (Rn222) exhalation rate from walls and air exchange upon its concentration in room air was considered using a simple mathematical room model. The exhalation rates have been determined in ten low ventilated rooms of ten villas in Jeddah city (Western Province) of Saudi Arabia. An electroprecipitation method has been applied for the determination of the Rn222 gas concentration in these rooms. The mean Rn222 gas concentration was found to be 46.80 +/8.80 Bq m(3). The mean Rn222 exhalation rate was estimated to be 20.11 +/6.90 Bq m(2) h(1). The mean inhalation dose due to the exposure to Rn222 gas was calculated to be 1.18 +/2.30 mSv y(1). The second part of this paper deals with a study of natural radionuclide contents of samples collected from the building materials of these rooms under investigations in part one. Analyses were performed in Marinelli beakers with a gamma spectroscopy system to quantify radioactivity concentrations. The collected samples revealed the presence of the uraniumradium (Ra226) and thorium (Th232) radioisotopes as well as K40. The mean activity concentration of Ra226, Th232 and K40 was determined to be 48.30 +/5.08, 43.90 +/5.63 and 223.90 +/7.55 Bq kg(1), respectively. These activities amount to a radium equivalent (Raeq) of 125.96 +/15.90 Bq kg(1) and to a mean value of external hazard index (Hex) of 0.34 +/0.04.
ISSN
:
0969806X
Journal Name
:
RADIATION PHYSICS AND CHEMISTRY
Volume
:
81
Issue Number
:
11
Publishing Year
:
1433 AH
2012 AD
Article Type
:
Article
Added Date
:
Saturday, July 22, 2017
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
AM Abdallah,
Abdallah,, A.M
Investigator
M. Mohery
Mohery, M.
Researcher
Doctorate
mmohery@hotmail.com
Saud J Yaghmour,
Yaghmour,, Saud J
Researcher
Doctorate
S.H Alddin
Alddin, S.H
Researcher
Doctorate
Files
File Name
Type
Description
42161.pdf
pdf
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