High radioactivity levels of radium isotopes in groundwater of the Disi aquifer
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Elevated levels of groundwater radioactivity found in fifteen wells from the Disi aquifer in Jordan and in the main collection reservoir were investigated. The estimated annual doses in the studied wells and the reservoir are 0.53 ± 0.02 mSv yr−1 and 0.62 ± 0.02 mSv yr−1, respectively. These values are higher than the 0.1 mSv yr−1 recommended by the World Health Organization and 0.5 mSv yr−1 recommended in the Jordanian standard. However, the measured dose after mixing with surface water has decreased. Filtered tap water is recommended for drinking since the analyzed samples showed extremely low levels of radioactivity.
KeywordsGamma-ray spectroscopy Gross alpha and gross beta counting Disi aquifer Effective annual dose Drinking groundwater
The authors would like to thank Jordan Atomic Energy Commission (JAEC) for performing the samples preparation and counting at JAEC’s laboratories.
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