在地中海海中微塑料成分和辅助污染物的生物积累和饮食生物可获得性
Albert Vega-Herrera1, Katerina Savva1, Pol Lacoma1
1Institute of Environmental Assessment and Water Research (IDAEA), CSIC, C. Jordi Girona, 18-26, 08034, Barcelona, Spain.
Chemosphere
|July 25, 2024
概括
微塑料 (MPL) 在贝中积累,影响共污染物生物积累. 虽然MPLs减少了PFAS积累,但它们在模拟消化过程中增加了PFAS生物可访问性.
科学领域:
- 环境科学 环境科学
- 生态毒理学 生态毒理学
- 海洋生物学 海洋生物学
背景情况:
- 微塑料 (MPL) 是水生生态系统中新出现的污染物.
- MPLs可以在海洋生物中生物累积,对食物链构成风险.
- 了解MPL与其他有机污染物的相互作用至关重要.
研究的目的:
- 为了评估聚乙烯 (PE),聚乙烯 (PS) 和聚乙烯四甲酸盐 (PET) 微塑料在地中海中的生物积累.
- 评估MPL对三桑 (TCS) 和per-和多醇基物质 (PFAS) 的吸收和生物积累的影响.
- 通过体外消化试验来确定MPL如何调节人类对共污染物的生物可访问性.
主要方法:
- 在地中海海 (Mytilus galloprovincialis) 的海洋微观宇宙中进行暴露实验.
- 微塑料和辅助污染物生物积累的分析使用LC(SEC) -HRMS.
- 在体外消化测试以评估污染物的人类生物可访问性.
主要成果:
- 微塑料的生物积累因化学成分和颗粒大小而有所不同.
- 在微塑料的存在下,和多基基物质 (PFAS) 的积累和生物积累较低.
- 尽管积累较少,但微塑料在模拟人类消化过程中显著增加了PFAS的生物可访问性.
结论:
- 过器料的微塑料摄入受塑料类型和尺寸的影响.
- 微塑料可以作为有机污染物的载体,改变它们的生物可访问性.
- 这些发现强调了微塑料在污染物转移和人类暴露中的复杂作用.
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