Publication details

Polybrominated diphenyl ether contamination in sediments from rivers in the western Niger Delta of Nigeria

Authors

IWEGBUE Chukwujindu M. A. OSHENYEN Ejonafuvwe V. PERETIEMO-CLARKE Beatrice O. OLISAH Chijioke NWAJEI Godwin E. MARTINCIGH Bice S.

Year of publication 2024
Type Article in Periodical
Magazine / Source Marine Pollution Bulletin
MU Faculty or unit

Faculty of Science

Citation
Web https://www.sciencedirect.com/science/article/pii/S0025326X24000171?via%3Dihub
Doi http://dx.doi.org/10.1016/j.marpolbul.2024.116040
Keywords Polybrominated diphenyl ethers; Sediments; River systems; Niger Delta
Description This study investigated the concentrations of 39 polybrominated diphenyl ether (PBDE) congeners in sediments from three rivers in the western Niger Delta of Nigeria that have been affected by pollution from urbanization and industrial activities. The Sigma 39 PBDE concentrations in sediments from these rivers ranged from 0.29 to 95.5, 5.15 to 121, and 0.73 to 66.1 ng g -1 for the Afiesere (AR), Edor (ER), and Okpare Rivers (OR), respectively. The homologue distribution patterns indicated the prominence of tetra- and penta-BDE congeners in sediments from these rivers. The ecological risk assessment results showed that the penta-BDEs were the primary source of risk to sediment -dwelling organisms in these rivers. However, the human health risk assessment indicated negligible risks for exposure of both adults and children to PBDEs in these sediments. The source apportionment suggests that the PBDE contamination in these river sediments was derived from long-distance migration, debromination of highly brominated congeners, and commercial penta-BDEs. These results reflect the use of penta-BDE formulations in this region rather than octa- and deca-BDE formulations.

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