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Title of article :
Magnetic characteristics of sediment grains concurrently contaminated with TBT and metals near a shipyard in Busan, Korea
Author/Authors :
Choi، نويسنده , , Jin Young and Hong، نويسنده , , Gi Hoon and Ra، نويسنده , , Kongtae and Kim، نويسنده , , Kyungtae and Kim، نويسنده , , Kyoungrean، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
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Abstract :
Bottom sediments near shipyards are often susceptible to receiving accidental spills of TBT and metals or their degradation products from hull scraping of antifouling system paints applied prior to 2008, when the AFS Convention 2001 was not in force. We investigated TBT and metal contamination of sediments near the shipyards of a small marina located in Busan, Korea and found that they were highly contaminated with TBT, Cu, and Zn. To better understand the environmental impacts and to make an optimal remediation plan, we characterized individual antifouling fragments in terms of metal and TBT contents, magnetic properties, and grain-size. Coarse-sized individual antifouling fragments exhibited simultaneously high levels of TBT, metals and high magnetic susceptibility, and appeared to be a major source of pollution in the sediment. Therefore, magnetic separation in combination with size-separation appears to be a cost-effective remediation method to remove the TBT and metals from contaminated shipyard sediments.
Keywords :
Tributyltin (TBT) , Antifouling paint fragments , Shipyards , magnetic susceptibility , Metals , sediment remediation
Journal title :
Marine Pollution Bulletin
Journal title :
Marine Pollution Bulletin
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