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KMID : 0385520090220050360
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Analytical Science & Technology
2009 Volume.22 No. 5 p.360 ~ p.368
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Analysis of butyltin compounds in Crassostrea gigas and Tapes philippinarum on the korean coast
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Lee Seong-Eon
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Abstract
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Tributyltin (TBT) use has been prohibited by the IMO (International Maritime Organization), as well as Korea, since 2003. This prohibition has affected a gradual reduction in TBT use in maritime environs (seawater, sediment, and biosamples) in several countries. In this study, Crassostrea gigas (oyster) and Tapes philippinarum (manila clam) were chosen and measured for butyltin compound concentrations to verify TBT pollution levels since its 2003 ban. Specimens were taken directly from farms for concentration measurement, where Crassostrea gigas and Tapes philippinarum are cultivated, as well as prevalent locations predicted to have been polluted. Concentrations of MBT, DBT, and TBT of Crassostrea gigas were measured to be N.D -N.D., N.D. -N.D., and N.D. -60.21 ng Sn g?¹ (wet wt), respectively. Regarding Tapes philippinarum, MBT, DBT, and TBT were N.D. -12.27 ng Sn g?¹ (wet wt), N.D. -45.95 ng Sn g?¹ (wet wt), and N.D.-7.30 ng Sn g?¹ (wet wt), respectively. For this research, a correlative study was conducted to determine butyltin compound concentration in Crassostrea gigas at the locations where measurements were made in 1994 to determine to what extent TBT pollution level decreased. A decrease in all 7 sites was observed. In 4 of the 7 samples, butyltin compounds were measured to be below the detection limit, while that of the Tapes philippinarum did not appear high compared to foreign research data.
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KEYWORD
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Tributyltin(TBT), Dibutyltin(DBT), Monobutyltin(MBT), Crassostrea gigas, Tapes philippinarum
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