Distribution and Origin of Organotin Species in Seawater of the Seto Inland Sea, Japan

大阪～別府間のフェリーを利用して採取した海水中の有機スズ化合物をNaBEt4によりエチル化後, ガスクロマトグラフィー―誘導結合プラズマ質量法により測定した。9種類の有機スズ化合物の瀬戸内海における分布を, 1ng Sn/l以下の濃度レベルで初めて明らかにした。トリブチルスズ (TBT) 及びトリフェニルスズ (TPhT) の濃度は各々, 0.21～1.02ng Sn/l, 0.021～0.Og6ng Sn/lであった。3種類の未同定化学種が各々モノー, ジー, トリーオクチルスズ化合物であると同定し, プラスチック安定剤起源の汚染が進行していることを明らかにした。ブチルスズ化合物及びTPhT以外のフェニルスズ化合物は溶存態として, ジー, トリーオクチルスズ化合物は懸濁態として存在することを明らかにした。更に, 化学種の濃度データを主成分分析することにより, 各海域を汚染形態 (船底塗料起源の汚染又はプラスチック安定剤起源の汚染) により分類できることを示した。

[1]  C. Quétel,et al.  Tin speciation in the femtogram range in open ocean seawater by gas chromatography/inductively coupled plasma mass spectrometry using a shield torch at normal plasma conditions. , 1999, Analytical chemistry.

[2]  H. Harino,et al.  Temporal trends of organotin compounds in the aquatic environment of the Port of Osaka, Japan , 1999 .

[3]  T. Hobo,et al.  Trace analysis of tributyltin and triphenyltin compounds in sea water by gas chromatography-negative ion chemical ionization mass spectrometry. , 1998, Journal of chromatography. A.

[4]  Akira Otsuki,et al.  Concentration and distribution of butyltin compounds in a heavy tanker route in the strait of Malacca and in Tokyo Bay , 1998 .

[5]  P. Sandra,et al.  Sensitive, Simultaneous Determination of Organomercury, -lead, and -tin Compounds with Headspace Solid Phase Microextraction Capillary Gas Chromatography Combined with Inductively Coupled Plasma Mass Spectrometry , 1997 .

[6]  Masatoshi Morita,et al.  Imposex in Japanese gastropods (neogastropoda and mesogastropoda): Effects of tributyltin and triphenyltin from antifouling paints , 1995 .

[7]  B. Hattum,et al.  Comparison of GC/MSD and GC/AED for the determination of organotin compounds in the environment , 1993 .

[8]  Peter F. Seligman,et al.  Evidence for rapid, nonbiological degradation of tributyltin compounds in autoclaved and heat-treated fine-grained sediments , 1992 .

[9]  J. Weber,et al.  Adsorptive behavior of butyltin compounds under simulated estuarine conditions , 1986 .

[10]  H. Tao,et al.  Mercury speciation in natural gas condensate by gas chromatography-inductively coupled plasma mass spectrometry , 1998 .

[11]  H. Harino,et al.  Contamination of butyltin and phenyltin compounds in the marine environment of Otsuchi Bay, Japan. , 1998, Environmental pollution.

[12]  J. Szpunar,et al.  Rapid speciation of butyltin compounds in sediments and biomaterials by capillary gas chromatography-microwave-induced plasma atomic emission spectrometry after microwave-assisted leaching/digestion , 1996 .

[13]  Y. Chau,et al.  Speciation and genotoxicity of butyltin compounds , 1995 .