Diagenesis and bioavailability of mercury in the contaminated sediments of Ulhas Estuary, India

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dc.contributor.author Ram, A.
dc.contributor.author Borole, D.V.
dc.contributor.author Rokade, M.A.
dc.contributor.author Zingde, M.D.
dc.date.accessioned 2009-11-10T11:28:25Z
dc.date.available 2009-11-10T11:28:25Z
dc.date.issued 2009
dc.identifier.citation Marine Pollution Bulletin, vol.58(11); 1685-1693
dc.identifier.uri http://drs.nio.org/drs/handle/2264/3427
dc.description.abstract Sequential extraction of Hg was performed in a core collected from intertidal area in Ulhas Estuary in order to characterize the downward distribution and diagenetic behavior of Hg in a polluted estuary. Concentration of total Hg ranged between 0.46 and 6.40 mu g g sup(-1) with significant decrease in surficial sediment as a result of closing of two Hg-cell based chlor-alkali plants. Results of sequential extraction showed that >65% Hg was strongly bound to organo-sulphur and inorganic sulphide species that are not bioavailable. Flux of only 18.8% of Hg was found compared to its value deposited on sediment–water interface. Hence, it is concluded that there is no significant diagenetic remobilization of Hg in Ulhas Estuary. This core also has been analyzed for sup(210)Pb geochronology. The estimated sedimentation rate is 0.31 cm y sup(-1) in the present sampling region
dc.language.iso en
dc.publisher Elsevier
dc.rights An edited version of this paper was published by Elsevier. Copyright [2009] Elsevier
dc.subject intertidal environment
dc.subject pollution effects
dc.subject lead isotopes
dc.subject diagenesis
dc.title Diagenesis and bioavailability of mercury in the contaminated sediments of Ulhas Estuary, India
dc.type Journal Article


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