Congener-specific levels and patterns of polychlorinated biphenyls in edible fish tissue from the central Red Sea coast of Saudi Arabia
AuthorsBatang, Zenon B.
Mannalamkunnath Alikunhi, Nabeel
Aziz, Mohammed A.M.
Al-Suwailem, Abdulaziz M.
KAUST DepartmentCoastal and Marine Resources Core Laboratory
KAUST Grant NumberKAUST/MoA 228211
Permanent link to this recordhttp://hdl.handle.net/10754/620941
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AbstractAll 209 congeners of polychlorinated biphenyls (PCBs) in edible fish tissue from the central Red Sea coast (Jeddah region) of Saudi Arabia were analyzed by isotope dilution high-resolution gas chromatography–mass spectrometry. The upper-bound total PCB (ΣPCB) levels in nine commonly consumed fish species from three areas were 0.2–82.5 ng/g wet weight (17–8450 ng/g lipid weight), which were at the lower end of reported global range and far below international tolerance limits (500–3000 ng/g ww). Dioxin-like congeners contributed up to 12.8% (mean 6.5%) to ΣPCB in tissue samples, with the total PCB toxic equivalencies (TEQs) at a tolerable range (0.05–2.6 pg TEQ/g ww or 2–238 pg TEQ/g lw) for all species. PCB profiles were dominated by moderately chlorinated homologs, mainly hexachlorobiphenyls, but less chlorinated congeners were also consistently elevated, notably in Siganus rivulatus (Area III) and Mugil cephalus (Area I). It remains to be ascertained if the latter were breakdown products or due to fresh inputs. The top congeners based on dominance by both occurrence and abundance were identified as potential markers of ΣPCB in fish tissue, which can be used for future selective biomonitoring in case of reasonable constraints on full congener approach.
CitationBatang ZB, Alikunhi N, Gochfeld M, Burger J, Al-Jahdali R, et al. (2016) Congener-specific levels and patterns of polychlorinated biphenyls in edible fish tissue from the central Red Sea coast of Saudi Arabia. Science of The Total Environment. Available: http://dx.doi.org/10.1016/j.scitotenv.2016.07.207.
SponsorsSaudi Ministry of Agriculture[KAUST/MoA 228211]
Consortium for Risk Evaluation with Stakeholder Participation[DE-FC01-86EW07053]
JournalScience of The Total Environment
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