Title of article :
Radiological Hazards Associated with 238U, 232Th, and 40K in some selected Packaged Drinking Water in Ilorin and Ogbomoso, Nigeria
Author/Authors :
Benjamine Ajibola, Taiye Department of Physics - University of Ilorin, Ilorin, Nigeria , Michael Orosun, Muyiwa Department of Physics - University of Ilorin, Ilorin, Nigeria , Emmanuel Ehinlafa, Olusegun Department of Physics - University of Ilorin, Ilorin, Nigeria , Anike Sharafudeen, Fatimah Department of Physics - University of Ilorin, Ilorin, Nigeria , Naheem Salawu, Banji BS Geophysical and Consultancy Limited, Nigeria , Olatunji Ige, Simon Department of Physics - University of Ilorin, Ilorin, Nigeria , Akoshile, Clement O. Department of Physics - University of Ilorin, Ilorin, Nigeria
Abstract :
In order to ensure radiation monitoring and protection, investigation and assessment of radiological risks that may be associated with the consumption of packaged table waters commonly consumed in Ogbomoso and Ilorin metropolis, Nigeria, was carried out. The measurements were carried out using a ‘3 x 3’ inch lead-shielded NaI (Tl) detector coupled through coaxial cable to a multichannel analyser. The measured activity concentrations of the natural radionuclides in the packaged drinking water sample are mostly within the recommended limits. The estimated mean Annual Effective Dose was found to be within the acceptable limits of 1 mSv/y for the general populace except for the infants which is slightly higher for some of the samples. The estimated Excess Lifetime Cancer Risk were found to be lower than the world average value of 0.2 x 10-3 in only two of the selected packaged drinking water. This implies the possibility of developing cancer over a lifetime considering seventy years as the average life span is considerably high.
Keywords :
Radioactivity , Drinking water , Gamma-ray Spectrometry , Radiological Impact Assessment
