Distribution of Organotin Compounds in Representative Coastal Areas from Japan: A Review
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概要
- 論文の詳細を見る
The temporal trends of the organotin (OT) compounds in the coastal waters from Japan were investigated. Tributyltin (TBT) concentrations in water and biological samples decreased drastically in 1990 which regulation was enacted and after that, the decreasing of TBT concentration were not observed. No remarkable changes of TBT concentrations in sediment were observed in this period. At the presence day, mean concentration of TBT in water from Japan was 0.011m g l1 and no remarkable differences of TBT concentrations among sampling sites were observed. On the other hand, TBT concentrations were high in sediment from Ofunato Bay, the Port of Osaka, Tanabe Bay and Hakata Bay with poor flushing and shallow water. TPT concentrations in Tanabe Bay were the highest among the surveyed coastal waters of Japan. OTs concentrations were high in mussels from Yamada Bay and Otsuchi Bay which have many fishing ports. The vertical distribution in water column from Osaka Bay was discussed. TBT concentrations were constant during 0-20 m of water depth, which is due to vertical mixture of water. In the sediment cores, the concentration of TBT in the top 10 cm was higher than those in the other sediment core. It is estimated from the accumulation pattern and the deposition rate that TBT has been roughly used since the 1960. Cross-media partitioning of TBT in aquatic environment were calculated from the concentrations in water, sediment and biological samples. The sediment-water partitions coefficient and the biota-water partitions of TBT were high. Considering crossmedia partitioning and the half-lives of TBT in each compartment, it found that TBT contaminations in sediment have persisted for a long time. In order to recovery the OTs contamination, it is important to remove the sediment which was contaminated by OTs.
- 2008-08-20
著者
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宮崎 信之
国立科学博物館動物研究部
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MIYAZAKI Nobuyuki
Ocean Research Institute, The University of Tokyo
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宮崎 信之
東京大学海洋研究所大槌臨海研究センター
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Arai T
Otsuchi Marine Research Center Ocean Research Institute University Of Tokyo
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宮崎 信之
東大海洋研
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宮崎 信之
東京大学海洋研究所
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宮崎 信之
東大 海洋研
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Kimura Sachi
School Of Human Sciences Kobe College
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Miyazaki Nobuyuki
Center For International Cooperation Ocean Research Institute The University Of Tokyo
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Miyazaki Nobuyuki
Ocean Policy Research Foundation
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Miyazaki Nobuyuki
Graduate School Of Frontier Sciences The University Of Tokyo
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Harino Hiroya
Osaka City Inst. Public Health And Environmental Sci. Osaka Jpn
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宮崎 信之
国立科学博物館・動物研究部
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宮崎 信之
Department of Zoology, National Science Museum
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