Abstract

 
 
 
 Measurement of radon concentration level was carried out in 40 houses in Al – Najaf city during summer season of 2012. Long term measurement of indoor of old building radon concentrations have been taken, using a previously calibrated passive diffusion dosimeters containing CR – 39 solid state nuclear track detectors which are very sensitive for alpha particles. The measurement of the indoor radon concentration obtained in summer in these regions ranged from 11.654±4.216 Bq.m-3 to 53.610±8.777 Bq.m-3. The results were within universally permitted levels. 
 
 
 
Highlights
There are several different isotopes of radon, the one that is of greatest concern as a potential human health threat is Radon Rn-222
It can be seen that indoor radon concentrations varied from 53.61±8.777 Bq/m3 in location Al.Wafaa sample to 11.654±4.216 Bq/m3 in location Al.Moalmen sample in Al-Najaf government city
The observed variations of radon concentrations among various regions can be attributed to many factors like geological structure of the sites, the various types of building materials used for the construction of the houses, the heating systems and ventilation rates, and the aging effect on the building as well as the social habits of the dwellers
Summary
There are several different isotopes of radon, the one that is of greatest concern as a potential human health threat is Radon Rn-222. Because Rn-222 is a gas, it moves freely in the air spaces between rocks and in soil It becomes a human health concern when it leaks from the underlying soil into houses and other buildings. As far as human dwellings are concerned the possible enhanced risk could be expected only in a rather small action of houses depending essentially on the building materials ventilation features and soil characteristics. These factors are directly responsible for enhanced input and subsequent stagnation of Rn-222 in indoor air[1]. Solid state nuclear track detectors (CR39) were used in this work, to measure radon concentration in old buildings of Al-Najaf city. The density of the tracks (ρ) in the detectors was calculated according to relation [7]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
