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dc.contributor.authorRamzi, A.;
dc.contributor.authorRahman, K.H.
dc.contributor.authorGireeshkumar, T.R.
dc.contributor.authorBalachandran, K.K.
dc.contributor.authorJacob, C.
dc.contributor.authorChandramohanakumar, N.
dc.date.accessioned2017-03-01T09:42:38Z
dc.date.available2017-03-01T09:42:38Z
dc.date.issued2017
dc.identifier.citationMarine Pollution Bulletin, vol.114(2); 2017; 1081-1087
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/5088
dc.description.abstractPolycyclic aromatic hydrocarbons (PAHs) showed significant seasonal dynamics in surface sediments of a tropical ecosystem (Cochin estuary, south west coast of India). Concentrations ranged from 304 to 5874 ngg<sup>-1</sup> in pre-monsoon, 493 to 14,149 ngg<sup>-1</sup> in monsoon, and 194 to 10,691 ngg<sup>-1</sup> in post-monsoon. The estuary was moderately contaminated with low molecular weight PAH fractions, which increased rapidly during the monsoon season indicating land/river runoff as the major transport pathway. The dominance of 2–3 ring fractions in the PAH indicated petrogenic and low temperature combustion processes as major sources, while the very low levels of 5–6 ring components indicated low contribution from pyrolytic sources. Low molecular weight fractions were higher in concentration than the Effective Range-Median (ERM) levels, whereas high molecular weight PAHs were lower than the Effective Range-Low values (ERL). Calculated carcinogenic toxicity equivalents (TEQ) values ranged from 1 to 971 ng g<sup>-1</sup> in the surface sediments
dc.language.isoen
dc.publisherElsevier
dc.rightsAn edited version of this paper was published by Elsevier. Copyright [2016] Elsevier
dc.subjectGeology and geophysics
dc.subjectAquatic pollution
dc.subjectChemistry and biogeochemistry
dc.titleDynamics of polycyclic aromatic hydrocarbons (PAHs) in surface sediments of Cochin estuary, India
dc.typeJournal Article


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