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Butyltins in water, biofilm, animals and sediments of the west coast of India

DRS at CSIR-National Institute of Oceanography

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Title Butyltins in water, biofilm, animals and sediments of the west coast of India
 
Creator Bhosle, N.B.
Garg, A.
Jadhav, S.
Harjee, R.
Sawant, S.S.
Venkat, K.
Anil, A.C.
 
Subject biofilm
sediments
suspended particulate matter
shellfish
tributyltin
colonization
fouling organisms
Navicula subinflata
Paphia malabarica
 
Description Biofilm, fish, oyster, mussel, clam, surface seawater, suspended particulate matter (SPM), and sediment samples were collected from marine and/or estuarine waters of the west coast of India. These samples were analysed for butyltin derivatives such as dibutyltin (DBT)and tributyltin (TBT). The concentrations DBT plus TBT varied between 2.4 and 8.3, 163 and 363 ng/l, 5 and 2853 ng/g drywt in the SPM, seawater and sediment samples, respectively, of the Marmugao harbour, Goa, India. The values of DBT plus TBT ranged between 0.60 and 29,123 and 242 ng/l and 1.4 and 65 ng/g drywt in SPM, water and sediment samples, respectively, collected from the Mandovi estuary. In the Dona Paula Bay the DBT plus TBT varied from 10 to 89 ng/l in surface seawater, and TBT from 10 to 513 ng/g in biofilm samples. For the coastal sediment samples the concentration of DBT plus TBT ranged between 36 and 133 ng/g drywt of sediment. For the animal samples the DBT plus TBT ranged between 58 and 825 ng/g drywt of the tissue. Mussel tissues contained the highest amount of DBT plus TBT (825 ng/g drywttissue), whereas highest TBT concentration was recorded in the oyster (732 ng/g drywt). TBT was generally the most abundant butyltin compound in most of the samples suggesting fresh inputs and/or less degradation of TBT. A wide range of the observed butyltin concentrations suggests the presence of localized areas of contamination. Leaching of tributyltin-containing antifouling paints from the ocean going ships, shing and recreational boats, barges, and the inputs of TBT from the Goa shipyard and dry dock facility situated in the harbour are the probable sources of the DBT and TBT in the samples of the west coast of India. Higher levels of TBT were observed in biofilm relative to that in the surrounding seawater. When fed on TBT contaminated biofilm of the diatom Navicula subinflata, butyltin concentrations in the clam Paphia malabarica increased over the period of feeding suggesting the importance of biofilm in the transfer of butyltins to higher group of organisms.
 
Date 2008-07-02T04:52:33Z
2008-07-02T04:52:33Z
2004
 
Type Journal Article
 
Identifier Chemosphere, Vol.57; 897-907p.
http://drs.nio.org/drs/handle/2264/1127
 
Language en
 
Rights Copyright [2004]. It is tried to respect the rights of the copyright holders to the best of the knowledge. If it is brought to our notice that the rights are violated then the item would be withdrawn.
 
Publisher Elsevier