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KMID : 1024520110200050655
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Journal of the Environmental Sciences
2011 Volume.20 No. 5 p.655 ~ p.665
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Contamination of Butyltin Compounds in Sediments inside Jeju Harbor of Jeju Island
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Kam Sang-Kyu
Huh Chul-Gu
Lee Min-Gyu
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Abstract
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Contamination of butyltin compounds (BTs), namely tributyltin (TBT), dibutyltin (DBT) and monobutyltin (MBT), was evaluated in sediments collected inside Jeju Harbor in 2001. The concentrations of BTs in surface sediments were comparable to those in other sites of domestic and foreign countries. The high correlations between BTs in surface ( = 0.83~0.91) and core ( = 0.70~0.79) sediments and the significant correlations between BTs concentrations and the number of incoming and outgoing vessels indicated that DBT and MBT were mainly degraded from TBT based on antifouling paints of vessels etc. and other sources, such as DBT and MBT, could be ignored. The butyltin degradation indices ([DBT] + [MBT]/[TBT]) in surface sediments were in the range of 2.2~3.6 (mean 2.7), indicating that the parent compound, TBT, was inflowed into the surface sediments a long ago, degraded and deposited. The sedimentation age of BTs contaminated core sediments could not estimated because the content of activity was nearly all the same and so the sedimentation rate could not obtained.
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KEYWORD
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Butyltins compounds, Jeju Harbor, Surface and core sediments, Butyltin degradation indices (BDI), Sedimentation age
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