まとめ
DEHPやDBPのようなフェタル酸性可塑剤は,海洋サンプルから発見されました. これらの化学物質,特にDEHPは,PCBやDDTよりも高い濃度で水や堆積物の中に存在していた.
科学分野:
- 環境化学 環境化学
- マリン・バイオロジー マリン・バイオロジー
- 生態毒理学 エコトキシコロジ
背景:
- フタルエステル可塑剤は,広く使用されている産業用化学物質です.
- 以前の研究では,海洋環境で様々な汚染物質が検出されました.
研究 の 目的:
- オープンオーシャン環境でフタラートエステルを検出および定量化するために.
- フタラート濃度とPCBやDDTの濃度を比較する.
主な方法:
- メキシコ湾と北大西洋から採取した水,堆積物,空気,生物のサンプルを分析.
- ディ−−2-エチルヘキシル) プタラート (DEHP) と ディ−n−ディブチルプタラート (DBP) の定量化.
- 比較のための多塩化ビフェニル (PCB) とDDT濃度の決定.
主要な成果:
- 分析されたほぼすべてのサンプルでフタル酸エステル (DEHPとDBP) が検出されました.
- DEHPは,水と沈殿物のサンプルでPCBやDDTよりも高い濃度で発見された.
- フタル酸塩の存在は,さまざまな環境マトリックスと地理的な場所において広く存在していた.
結論:
- フタル酸性可塑剤は,オープンオーシャン環境で至るところに存在する汚染物質です.
- DEHPは海洋生態系における重要な汚染物質であり,PCBやDDTのようなレガシー汚染物質のレベルを超えています.
- フタラート可塑剤の広範な存在と継続的な生産のために,フタラート可塑剤の環境への影響のさらなる評価は正当化されています.
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