Radiation profile mapping and health impact assessment due to 222Rn exposure from groundwater in coal mining city Asansol, West Bengal, India

Abstract222Rn activity was measured in Asansol city and the adjacent mining area, West Bengal, India.222Rn concentrations were found to vary in the range 6.4 –145, 1080–91002, and 2070–180000 Bqm−3 in indoor air, soil gas, and groundwater, respectively. Total effective doses (TEDs) due to222Rn exposure were also estimated. In some sampling locations, TEDs appear to exceed the maximum permissible limit (100 µSvy−1).222Rn concentration variation contour mapping was prepared. Carcinogenic health risk factors (HRF) due to222Rn activity were also estimated. In some places, HRFs are found to be very high (>  permissible limit ~ 1.0).
Source: Journal of Radioanalytical and Nuclear Chemistry - Category: Nuclear Medicine Source Type: research