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dc.contributor.authorChakraborty, P.
dc.contributor.authorBabu, P.V.R.
dc.date.accessioned2015-09-08T09:20:07Z
dc.date.available2015-09-08T09:20:07Z
dc.date.issued2015
dc.identifier.citationMarine Pollution Bulletin, vol.95(1); 2015; 350-357
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/4782
dc.description.abstractDistribution and speciation of mercury (Hg) in the sediments from a tropical estuary (Godavari estuary) was influenced by the changing physico-chemical parameters of the overlying water column. The sediments from the upstream and downstream of the estuary were uncontaminated but the sediments from the middle of the estuary were contaminated by Hg. The concentrations of Hg became considerably less during the monsoon and post monsoon period. Total Hg concentrations and its speciation (at the middle of the estuary) were dependent on the salinity of the overlying water column. However, salinity had little or no effect on Hg association with organic phases in the sediments at downstream. Increasing pH of the overlying water column corresponded with an increase in the total Hg content in the sediments. Total organic carbon in the sediments played an important role in controlling Hg partitioning in the system. Uncomplexed Hg binding ligands were available in the sediments
dc.language.isoen
dc.publisherElsevier
dc.rightsAn edited version of this paper was published by Elsevier. Copyright [2015] Elsevier
dc.subjectGEOLOGY AND GEOPHYSICS
dc.subjectGEOLOGY AND GEOPHYSICS
dc.subjectCHEMISTRY AND BIOGEOCHEMISTRY
dc.subjectAQUATIC ECOLOGY, PRODUCTIVITY
dc.titleEnvironmental controls on the speciation and distribution of mercury in surface sediments of a tropical estuary, India
dc.typeJournal Article


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