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Nathaniel J Clark1, Astrid C Fischer1, Demelza Carne1

  • 1School of Biological and Marine Sciences, University of Plymouth, Plymouth, PL4 8AA, UK.

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科学分野:

  • 環境科学
  • 食品の安全性
  • 植物生物学

背景:

  • 農作物のナノプラスチックの蓄積は,分析上の限界のために十分に理解されていません.
  • ポリスチレンナノプラスチック (PSNP) は一般的な環境汚染物質です.

研究 の 目的:

  • ラディッシュ (Raphanus sativus) のPSNPの吸収と転移を調査する.
  • 食用植物部位にナノプラスチックが蓄積する可能性を評価する.

主な方法:

  • 放射性マーキング (C-PS NPs) は,ナノプラスチックの動きを追跡するために使用されました.
  • 5日間のC-PSNPに対するラディッシュの水栽培暴露
  • 肉のない根,肉の根,芽のナノプラスチックの蓄積の定量化

主要な成果:

  • ラディッシュの根は14のC-PSNPの5%近くを保持しました.
  • C-PS NPsは食用肉根 (∼25%) と芽 (∼10%) で検出されました.
  • ナノプラスチックの分布は,トレンドに沿った:非肉根 > 肉根 > 芽.

結論:

  • ポリスチレンナノプラスチックが カスパリアン帯を通って 食用植物組織に転移します
  • ナノプラスチックの植物の摂取は 人への潜在的曝露経路を示しています
  • この新たな食品安全問題に対処するためにさらなる研究が必要である.