The Speciation of Organotin Compounds in Sediment and Water Samples from the Port of Gdynia |
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| Authors: | Barbara Radke Andrzej Wasik Linda L Jewell Urszula Pączek Jacek Namieśnik |
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| Institution: | 1. Department of Marine Geology, Institute of Oceanography , University of Gdańsk , Gdynia , Poland;2. Climatology Research Group , University of Witwatersrand , Johannesburg , Wits , South Africa;3. Department of Analytical Chemistry, Chemical Faculty , Gdańsk University of Technology , Gdańsk , Poland;4. School of Chemical and Metallurgical Engineering , University of the Witwatersrand , Johannesburg , Wits , South Africa;5. Department of Marine Geology, Institute of Oceanography , University of Gdańsk , Gdynia , Poland |
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| Abstract: | Organotin compounds (OTC) are toxic towards all living organisms. The application of organitin-based antifouling systems is becoming the main source of OTC in the ocean. Harbor sediments and water contain large deposits of organotin compounds due to application of antifouling systems in the shipping industry. OTC contamination presents a potential risk to the marine environment. Sediment and water samples were collected in 2009 from Gdynia Harbor. For all the analyzed organotin compounds, the mean concentration values were determined: water samples monobutyltin (MBT): 13.2, dibutyltin (DBT): 16.7, tributyltin (TBT): 60.7 (ng cation dm?3), and sediment samples MBT: 261.4, DBT: 751.9, TBT: 2148.2 (ng cation g?1 d.w.). The estimated content of monophenyltin (MPhT), diphenyltin (DPhT), triphenyltin (TPhT), monooctyltin (MOT), dioctyltin (DOT), and tricyclohexyltin (TCHT) were below the detection limit of the applied method. It was found that the content of organic matter, the amount of fine fraction, and the pH all play a significant role in the distribution and sorption process of OTC between the water and the sediment on the bottom. Compared to an earlier study, the concentrations of all OTC are much lower, confirming that the applied legislation has had a positive impact. |
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| Keywords: | Sediments water organotins dredged spoils port |
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