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Natural radioactivity in soil and water from likuyu village in the neighborhood of Mkuju uranium deposit

International Journal of Analytical Chemistry, ISSN: 1687-8779, Vol: 2013, Page: 501856
2013
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Article Description

The discovery of high concentration uranium deposit at Mkuju, southern part of Tanzania, has brought concern about the levels of natural radioactivity at villages in the neighborhood of the deposit. This study determined the radioactivity levels of 30 soil samples and 20 water samples from Likuyu village which is 54 km east of the uranium deposit. The concentrations of the natural radionuclides U, Th, and K were determined using low level gamma spectrometry of the Tanzania Atomic Energy Commission (TAEC) Laboratory in Arusha. The average radioactivity concentrations obtained in soil samples for U (51.7 Bq/kg), Th (36.4 Bq/kg), and K (564.3 Bq/kg) were higher than the worldwide average concentrations value of these radionuclides reported by UNSCEAR, 2000. The average activity concentration value of U (2.35 Bq/L) and Th (1.85 Bq/L) in water samples was similar and comparable to their mean concentrations in the control sample collected from Nduluma River in Arusha. © 2013 Najat K. Mohammed and Mohamed S. Mazunga.

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