淡路島で採取した貝類中の船底防汚物質の濃度

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  • Concentrations of Antifouling Biocides in Mussel and Oyster from Awaji Island, Japan
  • アワジシマ デ サイシュ シタ カイルイ チュウ ノ センテイボウオ ブッシツ ノ ノウド

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The contamination by antifouling biocides in the coastal area of Awaji island wa surveyed using mussel (Mytilus galloprovinciatis) and oyster (Crassostrea nippona). Tributyltin (TBT) compounds in mussel and oyster were detected in the range of 0.016-0.650 mg/kg ww (wet weight) and 0.230-0.480 mg/kg ww, respecitively. TBT concentrations in mussel from Awaji island were higher in comparison with those in Yamada Bay, Otsuchi Bay, the port of Osaka, Maizuru Bay and Tanabe Bay. TBTconcentrations in most mussel and oyster exceeded TARL (tolerable average residue level) which was calculated using TDI (tolerable daily intake). TPT concentrations in mussel and oyster were in the range of 0.005-0.069 mg/kg ww and 0.003-0.068 mg/kg ww, respectively. TPT concentrations in some of mussel and oyster exceeded TARL as sell as TBT. Sea nine 211, Diuron and Irgarol 1051, which are alternative compounds of organotin, were analyzed in mussel and and oyster. The detection frequencies of Sea mime 211 amd Diuron were low 1051 was detected in mussel and oyster in the range of 0.010-0.050 mg/kg ww and 0.00.3-03035mg-kg ww , respectively. The dection of altanative biocides in biological samples suggests the use of antifouling bilcides.

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