比较原始和UV-VIS老化的微塑料的影响:模型陆地和淡水甲类的行为反应
Primož Zidar1, Dana Kühnel2, Andrijana Sever Škapin3
1University of Ljubljana, Biotechnical Faculty, Department of Biology, Jamnikarjeva 101, Ljubljana SI-1000, Slovenia.
Ecotoxicology and environmental safety
|September 14, 2024
概括
环境的气候变化改变了微塑料 (MP) 的特性. 这项研究发现,尽管发生了物理化学变化,但老年MP并没有显著影响大夫尼玛格纳或Porcellio scaber的行为.
科学领域:
- 环境科学 环境科学
- 生态毒理学 生态毒理学
- 聚合物科学 聚合物科学
背景情况:
- 微塑料 (MP) 在环境气候变化过程中经历物理化学变化.
- 有限的知识存在于气候变化的MPs对水生和陆生生物的生态影响.
研究的目的:
- 在UV-VIS气候变化后调查MP的物理化学变化.
- 为了比较原始和老年MPs对大夫尼亚大和Porcellio的行为的影响.
主要方法:
- 来自聚烯面膜,聚织品,汽车轮胎和LDPE的MPs使用加速UV-VIS老化进行了耐候.
- 分析了物理化学特性 (FTIR,表面特性).
- 评估了Daphnia magna和Porcellio scaber的行为反应 (游泳,避免) 在原始和老年MP中.
主要成果:
- 聚烯 (PP) 和低密度聚乙烯 (LDPE) 经过气候变化后显示FTIR光谱和表面特性发生显著变化;PP和织纤维呈现碎片化.
- 大多数老年和原始的MPs没有影响大夫尼大的游泳行为,除了原始的轮胎颗粒,这表明了物理效应.
- 伍德利斯 (Porcellio scaber) 没有显著的避免,有轻微的趋势是避免原始的聚织纤维,并更喜欢老的中间面膜层MP.
结论:
- 加快的气候变化会诱导各种MP的物理化学变化,聚合物类型会影响变化的程度.
- 尽管观察到物理化学变化,但经过气候变化的MP并没有在测试的水生和陆生无脊椎动物中引起显著的行为变化.
- 这项研究强调了环境诱导的MP降解与对关键无脊椎动物物种的直接生态行为影响之间的脱节.
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