Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7968900 | Journal of Radiation Research and Applied Sciences | 2018 | 7 Pages |
Abstract
The overall weighted mean of areal exhalation rate (EA) and effective Radium content (Raeff) for soil samples collected from different 10 districts in Jazan city is 17.02 ± 2.06 Bq mâ2dâ1, 3.01 ± 0.37 Bq kgâ1 respectively. For 20 Building materials samples, EA = 1.989 ± 1.056 Bq mâ2dâ1 and Raeff = 0.351 ± 0.186 Bq kgâ1. Finally, for decorative materials (23 samples), EA = 1.225 ± 0.136 Bq mâ2dâ1 and Raeff = 0.427 ± 0.031 Bq kgâ1. The maximum values of the measured parameters are found in the soil of scheme 5 and 6 district, red sand (building material) and gypsum (decorative material). As the mass of the sample increase, more and more radon diffused back into the sample and the measured effective radium content is reduced. After correcting the results for back diffusion effect, all masses approximately get the same value of effective radium content and then reduced the uncertainty in the weighted mean.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
M. Abo-Elmagd, Ahmed Saleh, G. Afifi,