幼稚園教室におけるレガシーおよび新規可塑剤プロファイル:革新的な発生源同定と曝露評価
Yatai Li1, Yingxiu Zhao1, Xiaoyu Tian1
1College of Public Health, Zhengzhou University, Zhengzhou 450001, China.
Environment international
|December 12, 2025
まとめ
室内可塑剤は小児の発達にリスクをもたらします。この研究では、床材や寝具などの主要な発生源を特定し、表面から手への経口接触が子供たちの主要な曝露経路であることを発見しました。
科学分野:
- 環境科学; 公衆衛生; 毒物学
背景:
- 室内可塑剤への曝露は、小児の発達にとってますます懸念されています。汚染プロファイル、発生源、曝露経路を理解することは極めて重要ですが、限られています。
研究 の 目的:
- 幼稚園教室における可塑剤濃度と分布を体系的に特徴付けること。子供たちの主要な発生源と曝露経路を特定すること。室内可塑剤曝露を低減するための効果的な緩和戦略に情報を提供すること。
主な方法:
- 30の教室全体で、空気、粒子、ほこり、表面の可塑剤濃度を定量化しました。発生源の帰属のために新しいin situスクリーニング方法を採用しました。吸入、皮膚吸収、ほこりの摂取、表面から手への経口接触による曝露線量を計算しました。
主要な成果:
- 新興可塑剤(2,2,4-トリメチル-1,3-ペンタンジオールジイソブチレート)が気相を支配しましたが、レガシー可塑剤(フタル酸ジ(2-エチルヘキシル))が粒子、ほこり、表面で最も高くなりました。室内表面は貯蔵庫として機能し、子供の頻繁な接触により可塑剤が再分配されました。床材と寝具が主要な発生源(27%-59%)であり、壁とカーテンも有意に寄与しました(最大29%)。表面から手への経口経路は、特に低揮発性および新興可塑剤にとって、重要な曝露経路でした。
結論:
- 室内表面および床材や寝具などの特定の材料は、子供の環境における可塑剤の重要な発生源です。表面から手への経口経路は、子供の可塑剤曝露にとって、見過ごされがちな重要な経路です。曝露を低減するには、発生源材料の管理と、接触頻度の高い表面の頻繁な清掃が必要です。
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