Measurement of Radon Gas Level in Ashanti Region And Design of A Radon Vulnerability Map for Ghana

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February, 2007
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This thesis work was conducted to ascertain the variation of radon gas levels with passing years in the Lake Bosomtwi area and base on the obtained results a radon vulnerability map drawn for Ghana. Samples were collected in four villages around the lake and analyzed in the nuclear physics laboratory of the physics department of the Kwame Nkrumah University of Science and Technology. The results obtained were compared with results from previous years and it came out clear that year 2006 had the lowest average radon gas level of 99.95 pCiL-1 or 3.70 KBqm-3, with year 2001 having the highest of 167.2 pCiL-1 or 6.19 KBqm-3. Overall the average radon gas level between the years 2001 to 2006 for the Lake Bosomtwi area was 130.94 pCiL-1 and this value according to the United States’ Environmental Protection Agency is within the range of 0.1WL – 1WL (20-200 pCiL-1) which means that exposures in this range are considered greatly above average for residential structures. A vulnerability map of Ghana shows that research work have been conducted in the following regions Western, Central, Greater Accra and Ashanti and other regions like Eastern, Volta and the Northern parts of Ghana have experience little or no research.
A Report Submitted to the Department of Physics in Partial Fulfilment for the award of Msc. Physics Degree,