PAHs and hopanes in the surface sediments of Qatar coast and their ecological risks: Comparison with regional and global coastal regions
Marine Pollution Bulletin, ISSN: 0025-326X, Vol: 203, Page: 116494
2024
- 2Citations
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Article Description
The distribution, characteristics, sources and ecological risks of polycyclic aromatic hydrocarbons (PAHs) and hopanes in the surface sediments collected along the Qatar coast were investigated. Concentration of ∑ 14 PAHs and hopanes ranged between 0.076 and 7.04 ng g −1 (mean: 2.60 ng g −1 ), 100 and 700 ng g −1 (mean: 205 ng g −1 ), respectively. Sediment samples were dominated by high molecular weight PAHs composition (4–6 rings). Diagnostic ratios of PAH concentrations showed both petrogenic and pyrogenic origins of PAHs, with a higher percentage of pyrogenic sources. The ecological risk levels of PAHs were estimated using sediment quality guidelines (SQG), mean probable effect level quotient values (PEL-Q), carcinogenic toxic equivalent quantity (TEQ), and risk quotient (RQ) evaluation methods. The calculated TEQ values (0.00012–0.85 ng g −1 ) were lesser than those in other locations around the globe, and were also within the safe level (600 ng g −1 ) suggested by the Canadian soil quality guidelines.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0025326X24004715; http://dx.doi.org/10.1016/j.marpolbul.2024.116494; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85193713204&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/38788274; https://linkinghub.elsevier.com/retrieve/pii/S0025326X24004715; https://dx.doi.org/10.1016/j.marpolbul.2024.116494
Elsevier BV
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