Radionuclide contents in sediment and seafood from Makoko Lagoon, Lagos State, Nigeria.

Autor: Jibiri NN; Department of Physics, Radiation and Health Physics Research Laboratory, University of Ibadan, Ibadan, Nigeria., Ugbechie A; Department of Physics, Radiation and Health Physics Research Laboratory, University of Ibadan, Ibadan, Nigeria., Sowunmi AA; Department of Zoology, University of Ibadan, Ibadan, Nigeria., Akomolafe IR; Department of Physical Sciences, Redeemer's University Ede, Nigeria. Electronic address: akomolafei@run.edu.ng.
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2023 Jul; Vol. 192, pp. 114992. Date of Electronic Publication: 2023 May 12.
DOI: 10.1016/j.marpolbul.2023.114992
Abstrakt: Sediment and seafood samples were collected from Makoko Lagoon, Lagos state, Nigeria. Gamma-ray spectrometry was used to determine the activity concentrations of 40 K, 226 Ra and 232 Th in the samples. The average activity concentrations of 40 K, 226 Ra and 232 Th in the sediment were 41.04 ± 6.41, 10.15 ± 3.19 and 4.39 ± 2.10 Bq kg -1 , respectively, while the annual effective dose was 0.01 mSv/year. In seafood, the average activity concentrations of 40 K, 226 Ra and 232 Th were 15.66 ± 8.07, 1.72 ± 1.51 and 1.93 ± 0.30 Bq kg -1 , respectively. The cumulative effective ingestion dose obtained ranged from 0.016 μSv/year (giant prawn) to 1.08 μSv/year (Parrotgrunt). The mean activity concentrations and absorbed dose rate in sediment were below the worldwide average values. The cumulative dose from the ingestion of seafood was also significantly low. Sediment and seafood from the lagoon in Makoko pose no health risk from a radiological point of view to the population.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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