北部九州とその周辺水域におけるトリブチルスズ汚染

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タイトル別名
  • Tributyltin pollution in coastal areas around northern Kyushu
  • ホクブ キュウシュウ ト ソノ シュウヘン スイイキ ニ オケル トリブチル スズ オセン

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We determined tributyltin (TBT) concentrations in seawater and bottom sediment samples collected from coastal areas around northern Kyushu in 1998. The concentrations ranged from 5 to 94 ng/L in seawater and from 7 to 1,100 ng/g dry mud in sediment. High concentrations in water and sediment were detected in Hakata Bay (water: 13-94 ng/L , sediment: 18-1,100 ng/g dry mud). In the Ariake Sea, the TBT concentrations in water (5-91 ng/L) were as high as those in Hakata Bay, whereas the TBT concentrations in sediment (16-77 ng/g dry mud) were lower than those in Hakata Bay. The higher concentrations in water collected from the Ariake Sea may be attributable to the suspension of TBT-containing sediment due to tidal turbulence which is peculiar to the Ariake Sea.

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