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dc.contributor.authorFurtado, C.M.
dc.contributor.authorGireeshkumar, T.R.
dc.contributor.authorVignesh, E.R.
dc.contributor.authorFahadFathin, K.P.
dc.contributor.authorSuresh, A.
dc.contributor.authorJyothibabu, R.
dc.date.accessioned2025-01-17
dc.date.accessioned2025-01-21T10:49:57Z
dc.date.available2024-12-03
dc.date.available2025-01-21T10:49:57Z
dc.date.issued2024
dc.identifier.citationMarine Pollution Bulletin,Volume. 211;2025;article no:117387
dc.identifier.issn0025-326X
dc.identifier.otherhttps://www.sciencedirect.com/science/article/pii/S0025326X2401364X
dc.identifier.urihttps://doi.org/10.1016/j.marpolbul.2024.117387.
dc.identifier.urihttp://drs.nio.res.in/drs/handle/2264/9358
dc.descriptionIF2023=5.3
dc.description.abstractThis study investigated the distribution, sources, and ecological risk of polycyclic aromatic hydrocarbons (PAHs) in the surface sediments of the Western Bay of Bengal (WBoB). Coastal, shelf and slope sediments from the WBoB, collected from different research cruises, were analysed for 16 priority PAH pollutants. Total PAHs (TPAHs) were in the range of 1.87 918.79 ng/g and exhibited a significant association with organic matter and silt content with a predominance of high molecular weight (HMW) PAHs congeners. The preferential degradation of the labile low-molecular-weight (LMW) PAHs resulted in the sedimentary accumulation of HMW congeners. A comparison with reported values from other oceanic areas revealed a relatively low concentration of PAHs in WBoB. The isomeric ratios of PAHs could suggest a pyrogenic or petrogenic (crude oil) origin of PAHs. Principal component analysis indicated the dominance of HMW PAHs (petrogenic or combustion) over the LMW fraction. Based on sediment quality guidelines, four congeners [Pyrene (Py), Benzo[a]anthracene (BaA), Chrysene (Ch), and Dibenzo[a,h]anthracene (DbA)] exceeded the threshold effect levels, indicating an adverse impact of these PAHs on the benthic fauna occasionally. The corresponding risk quotients further indicated a moderate risk caused by Py, BaA, and Benzo[b]fluoranthene (BbF) to the biota. This study underscores the importance of proactive management and mitigation strategies to safeguard these vital oceanic ecosystems from the adverse effects of PAHs and other hazardous materials
dc.languageen
dc.publisherElsevier
dc.relation.isreferencedbySCI
dc.rightsOnly the author version of the copright reserved papers uploaded. Contact drs@nio.org for any complaints regarding copyright violations
dc.titlePolycyclic aromatic hydrocarbons in surface sediments of the western Bay of Bengal: Distribution, sources, and ecological risk assessment
dc.affiliation.authorCSIR-National Institute of Oceanography, Kochi, Kerala, India


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