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Research Journal of Environmental Toxicology

Year: 2011 | Volume: 5 | Issue: 1 | Page No.: 71-75
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Authors

B. Salameh

O. Abu-Haija

A-W. Ajlouni

M. Abdelsalam

Keywords

Research Article

Radiation Doses due to Indoor Radon Concentration in Tafila District, Jordan

B. Salameh, O. Abu-Haija, A-W. Ajlouni and M. Abdelsalam
In this study, measurements of the indoor radon concentration level using solid state nuclear track detectors inside dwellings were performed in the fall 2008. Fifty two detectors (type CR-39) were distributed in four sites in Tafila district, Jordan. The study sites were located in an area that has the most important phosphate mines and hot spa springs. After three months of the detector exposure, the detectors were etched in a 30% KOH solution at 70°C for 9 h. The Alpha track density was determined by means of an optical microscope. Radon concentrations were found to vary from region to region, ranging from 23.85 to 29 Bq m-3 with a mean value of 27.30 Bq m-3. Tafila city region was found to have the highest and the lowest radon concentration with a mean value of 28.77 Bq m-3. According to the findings of this study, the residents of the four sites may receive on the average an annual radon effective dose 0.665 mSv y-1, which is below the annual effective dose recommended by the International Commission on Radiological Protection (ICRP).
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