Otro
Speciation of butyltin derivatives in surface sediments of three southern Brazilian harbors
Registro en:
Journal of Hazardous Materials. Amsterdam: Elsevier B.V., v. 181, n. 1-3, p. 851-856, 2010.
0304-3894
10.1016/j.jhazmat.2010.05.091
WOS:000280601300112
Autor
de Oliveira, Cristiane Rossi
dos Santos, DayanaMoscardi
dos Santos Madureira, Luiz Augusto
Rodrigues de Marchi, Mary Rosa
Resumen
For the first time, organotin compounds were determined in surface sediment samples collected from Sao Francisco do Sul, Itajai-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 (TOT), n.d. to 394.4 ng (Sn)g(-1) dw for dibutyltin (DOT) and n.d. to 312.2 ng (Sn)g(-1) dw for monobutyltin (MBT). The highest concentration of total BTs was found at the Itajai-Acu 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. (C) 2010 Elsevier B.V. All rights reserved. Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)