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Relationship between the lability of sediment-bound Cd and its bioaccumulation in edible oyster

DRS at CSIR-National Institute of Oceanography

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Title Relationship between the lability of sediment-bound Cd and its bioaccumulation in edible oyster
 
Creator Chakraborty, P.
Ramteke, D.
Chakraborty, S.
Chennuri, K.
Bardhan, P.
 
Subject CHEMISTRY AND BIOGEOCHEMISTRY
GEOLOGY AND GEOPHYSICS
MOLLUSCS
CHEMISTRY AND BIOGEOCHEMISTRY
 
Description A linkage between Cd speciation in sediments and its bioaccumulation in edible oyster (Crassostrea sp.) from a tropical estuarine system was established. Bioaccumulation of Cd in edible oyster increased with the increasing lability and dissociation rate constants of Cd-sediment complexes in the bottom sediments. Total Cd concentration in sediment was not a good indicator of Cd-bioavailability. Increasing trace metal competition in sediments increased lability and bioavailability of Cd in the tropical estuarine sediment. Low thermodynamic stability and high bioavailability of Cd in the estuarine sediment were responsible for high bioaccumulation of Cd in edible oysters (3.2–12.2 mg kg− 1) even though the total concentration of Cd in the bottom sediment was low (0.17–0.49 mg kg− 1).
 
Date 2016-01-07T03:37:31Z
2016-01-07T03:37:31Z
2015
 
Type Journal Article
 
Identifier Marine Pollution Bulletin, vol.100; 2015; 344-351
no
http://drs.nio.org/drs/handle/2264/4872
 
Language en
 
Relation Mar_Pollut_Bull_100_344.jpg
 
Rights An edited version of this paper was published by Elsevier. Copyright [2015] Elsevier.
 
Publisher Elsevier