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J Hazard Mater. 2010 Sep 15;181(1-3):851-6. doi: 10.1016/j.jhazmat.2010.05.091. Epub 2010 May 26.

Speciation of butyltin derivatives in surface sediments of three southern Brazilian harbors.

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  • 1Chemistry Department, UFSC, Florianópolis, Santa Catarina, Brazil. rossi.cristiane@yahoo.com.br

Abstract

For the first time, organotin compounds were determined in surface sediment samples collected from São Francisco do Sul, Itajaí-Navegantes and Imbituba Harbors, located in Santa Catarina State, Brazil. Butyltins (BTs) were determined by gas chromatography with a pulsed flame photometric detector (GC-PFPD) after being modified using the Grignard derivatization method. The concentrations of BTs derivatives ranged from n.d. to 1136.6 ng (Sn) g(-1) of dry weight (dw) sediment for tributyltin (TBT), n.d. to 394.4 ng (Sn)g(-1) dw for dibutyltin (DBT) and n.d. to 312.2 ng (Sn) g(-1) dw for monobutyltin (MBT). The highest concentration of total BTs was found at the Itajaí-Açu River dockyard, indicating intense inputs of antifouling paints to the environment. The relative difference in the BTs levels is a particular characteristic of sediments from harbors and may be related to the shipyards and the boat traffic which still use TBT-based antifouling paints.

Copyright 2010 Elsevier B.V. All rights reserved.

PMID:
20554380
[PubMed - indexed for MEDLINE]
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