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Butyltins in the sediments of Kochi and Mumbai harbours, west coast of India

DRS at CSIR-National Institute of Oceanography

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Title Butyltins in the sediments of Kochi and Mumbai harbours, west coast of India
 
Creator Bhosle, N.B.
Garg, A.
Harji, R.
Jadhav, S.
Sawant, S.S.
Krishnamurthy, V.
Anil, A.C.
 
Subject sediments
harbours
seasonal variations
ocean currents
ocean tides
bidegradation
toxicity
pollution effects
marine organisms
organic compounds
 
Description Surface sediment samples were collected from various locations in the Mumbai and Kochi harbours, west coast of India, to assess the presence of butyltin compounds. Tributyltin (TBT) and dibutyltin (DBT) varied from 16 to 16,816 ng/g dry wt. and from undetected to 469 ng/g dry wt., respectively, of the sediment in Kochi harbour. In Mumbai harbour, the values of TBT and DBT ranged between 4.5 and 1193 ng/g dry wt. and from undetected to 131 ng/g dry wt. of the sediments, respectively. The concentrations of both TBT and DBT showed strong seasonal variation probably due to the effect of tides and currents. Nevertheless, the levels of butyltin compounds were generally higher at sites influenced by shipping activities such as navigation, dry dock and ship-building activities. The presence of DBT indicates the abiotic or microbiological degradation of TBT. Compared to TBT, DBT was relatively less abundant, suggesting either fresh inputs of TBT and/or less degradation of TBT. The concentrations of TBT showed significant positive relationships with organic carbon and lipid, implying that both lipophilic and ionic interactions were probably involved in controlling the abundance of TBT at these sediments. The observed levels of butyltin compounds are much higher than those required to induce toxic effects on marine organisms, suggesting that these sediments were contaminated with butyltin compounds
 
Date 2008-02-12T04:36:00Z
2008-02-12T04:36:00Z
2006
 
Type Journal Article
 
Identifier Environment international, Vol.32; 252-258p.
http://drs.nio.org/drs/handle/2264/836
 
Language en
 
Rights Copyright [2006]. It is tried to respect the rights of the copyright holders to the best of the knowledge. If it is brought to our notice by copyright holder that the rights are voilated then the item would be withdrawn.
 
Publisher Elsevier