Record Details

Environmental controls on the speciation and distribution of mercury in surface sediments of a tropical estuary, India

DRS at CSIR-National Institute of Oceanography

View Archive Info
 
 
Field Value
 
Title Environmental controls on the speciation and distribution of mercury in surface sediments of a tropical estuary, India
 
Creator Chakraborty, P.
Babu, P.V.R.
 
Subject GEOLOGY AND GEOPHYSICS
GEOLOGY AND GEOPHYSICS
CHEMISTRY AND BIOGEOCHEMISTRY
AQUATIC ECOLOGY, PRODUCTIVITY
 
Description Distribution 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
 
Date 2015-09-08T09:20:07Z
2015-09-08T09:20:07Z
2015
 
Type Journal Article
 
Identifier Marine Pollution Bulletin, vol.95(1); 2015; 350-357
http://drs.nio.org/drs/handle/2264/4782
 
Language en
 
Rights An edited version of this paper was published by Elsevier. Copyright [2015] Elsevier
 
Publisher Elsevier