:: Volume 19, Issue 2 (4-2021) ::
Int J Radiat Res 2021, 19(2): 309-316 Back to browse issues page
Excessive-life time cancer risks due to concentration of radionuclides and quantification of contamination of sediments from dredged portion of Niger River Nigeria
E.B. Faweya PhD., , T. Adewumi
Radiation and Health Physics Division, Department of Physics, Ekiti State University, Nigeria , Faweya.ebenezer@lmu.edu.ng
Abstract:   (192 Views)
Background: River Niger is the principal river of Western African and is Africa’s third longest river. The dredged project covers 572 km of the lower Niger, extending from Baro in Niger State to Warri Bifurcation in Delta State.  Materials and Methods: The current study estimated the activity concentrations of naturally occurring radionuclides and heavy metals concentrations in the sediment samples from Lower Niger River using gamma-ray and Atomic Absorption spectrometric techniques. Results: The weighted activity concentrations of radionuclides 40K (231± 21 Bq kg-1), 232Th (10±1 Bq kg-1), 226Ra (75±17 Bq kg-1), were obtained in the sediment samples. The radium equivalent, absorbed dose rate, hazardous indices and excessive-life time cancer risk were compared with the international recommended limits. Conclusion: The measured heavy metal concentrations, contamination factor, pollution load index and quantification of contamination indicated that sediment samples from the River were moderately contaminated.
Keywords: Contamination factor, heavy metals, pollution load index, radionuclides, sediment, quantification of contamination.
Full-Text [PDF 1680 kb]   (115 Downloads)    
Type of Study: Original Research | Subject: Medical Physics



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Volume 19, Issue 2 (4-2021) Back to browse issues page