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Organotins in the sediments of the Zuari estuary, west coast of India

DRS at CSIR-National Institute of Oceanography

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Title Organotins in the sediments of the Zuari estuary, west coast of India
 
Creator Jadhav, S.
Bhosle, N.B.
Massanisso, P.
Morabito, R.
 
Subject organometallic compounds
antifouling substances
coating materials
biodegradation
 
Description Industrial use of organotins such as butyltins and phenyltins has increased several folds during the last two decades. Butyltins and phenyltins are synthetic, multipurpose chemicals, which have been extensively used in marine antifouling paints. They have been known to be extremely poisonous to mollusk fishery resources (oysters, clams, etc.). Contamination of Zuari estuary (Goa, India) sediments was assessed by quantitative determination of butyltins and phenyltins by using GC-MS using the electron ionization mode. Butyltins predominated in the whole area over phenyltins. Butyltins contributed about 70-90% of the organotins in general. The concentration of butyltins in sediments ranged from 20 to 7621 ng Sn/g. The concentration of phenyltins in sediments ranged from 0 to 46 ng Sn/g. Degradation indices for butyltins and phenyltins were calculated. The Butyltin degradation index (BDI) for the Zuari sediments ranged from 0 to 2.7 indicating a lot of fresh input of butyltins in the estuary and a lower degradation rate. The phenyltin degradation index (PhDI) ranged from 1 to 10 implying that different processes were prevalent at different stations. The observed organotin levels in the Zuari estuary indicate some highly localized areas of contamination which are severe enough to cause harmful effects on marine flora and fauna. Therefore, there is a need to regulate the use of butyltins and phenyltins as biocides in marine antifouling paints
 
Date 2009-04-06T07:32:26Z
2009-04-06T07:32:26Z
2009
 
Type Journal Article
 
Identifier Journal of Environmental Management, vol.90(suppl. 1); S4-S7
http://drs.nio.org/drs/handle/2264/2614
 
Language en
 
Rights An edited version of this paper was published by Elsevier. Copyright [2009] Elsevier
 
Publisher Elsevier