Dynamics of polycyclic aromatic hydrocarbons (PAHs) in surface sediments of Cochin estuary, India

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dc.contributor.author Ramzi, A.;
dc.contributor.author Rahman, K.H.
dc.contributor.author Gireeshkumar, T.R.
dc.contributor.author Balachandran, K.K.
dc.contributor.author Jacob, C.
dc.contributor.author Chandramohanakumar, N.
dc.date.accessioned 2017-03-01T09:42:38Z
dc.date.available 2017-03-01T09:42:38Z
dc.date.issued 2017
dc.identifier.citation Marine Pollution Bulletin, vol.114(2); 2017; 1081-1087
dc.identifier.uri http://drs.nio.org/drs/handle/2264/5088
dc.description.abstract Polycyclic 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.iso en
dc.publisher Elsevier
dc.rights An edited version of this paper was published by Elsevier. Copyright [2016] Elsevier
dc.subject Geology and geophysics
dc.subject Aquatic pollution
dc.subject Chemistry and biogeochemistry
dc.title Dynamics of polycyclic aromatic hydrocarbons (PAHs) in surface sediments of Cochin estuary, India
dc.type Journal Article

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