Natural Radioactivity of Ground Water in Some Areas in Aden Governorate South of Yemen Region
Abstract
This paper presents the concentrations of naturally occurring radionuclides 226Ra, 232Th and 40K measured in Groundwater collected from Aden Governorate South of Yemen Region using gamma spectroscopy. Thirty seven Groundwater samples were collected from four areas in Aden Governorate. The average activity concentrations for groundwater from Beer Ahmed area were 1.60 Bql−1, 1.25 Bql−and 16.90Bql−1 for 226Ra, 232Th and40K respectively and from Beer Fadle area were 1.45Bql−1, 0.87Bql−1 and 19.8Bql−1 for 226Ra, 232Th and 40 K, respectively, while that for groundwater samples from Daar-saad area were 1.27 Bql−1, 1.18Bql−1 and 18.28 Bql−1 for 226Ra, 232Th and 40 K, respectively and Al-Masabian area were 1.55Bql−1, 1.421Bql−1 and 19.03Bql−1 for 226Ra, 232Th and 40K respectively. Also annual effective dose equivalent of ingestion of these waters was calculated. The results showed that the annual dose equivalent obtained in the present study was much higher than the recommended value (0.1mSv year−1) as reported by WHO. The results were compared with those for drinking water.
Keywords: Radioactivity, South Yemen, Aden Governorate, Groundwater, annual Effective dose
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