Abstract
A study of the possible radiological impact as a result of usage of water in two critical mining communities of Dumasi and Chujah at Bogoso in the Western Region of Ghana was carried out. Water samples collected from boreholes and treated water supplied by a gold mining company were analyzed for important radionuclides such as 238U, 234U, 226Ra, 210Po, 230Th, 232Th and 224Ra, using extractive techniques in the RadioAnalytical Laboratory of the South African Nuclear Energy Corporation. None of the radionuclide concentrations found exceeded the world averages in drinking water. The 238U/235U ratios were also found to fall within those for natural environmental materials. The dose contributions of the radionuclides for different age groups were evaluated using the IAEA recommended dose conversion factors. The lifetime average dose for all the communities are lower than 0.1 mSv/a as recommended by WHO; however, if age group classification is considered, infants less than 1 year old in Chujah are exposed to 0.11 mSv/a when the treated water is used.
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