传统和可生物降解的微塑料在海洋环境中积累和释放有机污染物
Camilla Catarci Carteny1, Elvio Diego Amato2, Fabienne Pfeiffer3
1Systemic, Physiological and Ecotoxicological Research (SPHERE), Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium. camilla.catarcicarteny@uantwerpen.be.
概括
可生物降解塑料 (多基酸盐和多酸盐) 积累了更多的海洋污染物,但释放的添加剂比传统的聚乙烯微塑料少.
科学领域:
- 环境科学 环境科学
- 海洋生物学 海洋生物学
- 聚合物科学 聚合物科学
背景情况:
- 微塑料 (MP) 污染在水生环境中越来越令人担忧.
- 国会议员可以积累和释放有害污染物.
- 可生物降解塑料被提出为替代品,但它们的环境行为尚未评估.
研究的目的:
- 为了比较海洋水中的可生物降解 (PHA,PBS) 和常规 (PE) MPs 的污染物积累和添加剂释放.
- 评估可生物降解的MPs对环境的影响.
主要方法:
- 64天内将PHA,PBS和PEMP暴露在天然海水中.
- 在暴露前后对多环芳 (PAHs),PCB,PFR,Phthalates和塑化剂进行量化.
主要成果:
- 在PBS和PHA-MP中,分别积累了更高水平的PAH和PFR.
- 与PBS和PHA-MP相比,PE-MP的PFR和增塑剂的浸出量是PE-MP的两倍.
- 所有测试的MP都显示出某种程度的添加性漏.
结论:
- 可生物降解的MP可能会积累更多的污染物,但会比传统的MP出更少的添加剂.
- 这些发现影响了可生物降解聚合物对海洋生物的风险评估.
- 结果为生物降解塑料的潜在采用提供了信息.
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