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Year : 2011  |  Volume : 34  |  Issue : 2  |  Page : 129-136

Measurement of radioactivity and hence define the radiological risk associated with the Chittagong city site coastal sediment containing all types of wastes (mills, factories, industries, and municipalities) in Bangladesh

1 Department of Physics, University of Chittagong, Chittagong, Bangladesh
2 Radioactivity Testing and Monitoring Laboratory, Bangladesh Atomic Energy Commission, Chittagong Medical College Hospital Campus, Chittagong, Bangladesh

Correspondence Address:
Md. Kowsar Alam
Department of Physics, University of Chittagong, Chittagong
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Source of Support: None, Conflict of Interest: None

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The research work was carried out with an aim to determine the radiological threat to the inhabitants of Chittagong city in Bangladesh. To investigate the radiological threat, the activity concentrations of naturally occurring radionuclides 238 U, 232 Th, 226 Ra, and 40 K were measured in the sediment samples collected from three locations of the major drainages (Chaktai Khal and Karnaphuli River) of Chittagong city. The activity concentrations of all the elements were found to be higher than those of the world average values. In the samples studied, the artificial radionuclide 137 Cs has not been detected. The radiation doses from where the samples were collected were measured directly by employing beta-gamma survey meter (model: LUDLUM 44-9). The average values of the radiological parameters calculated from the activity concentrations of the radionuclides mentioned in the sediment samples were found to be higher than those of the corresponding world average values. The results of the present research were compared with the corresponding results obtained in other locations of Bangladesh as well as in different countries published in different journals.

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