表面的物理化学特性和在海水中自然老化的微塑料的迪布甲酸吸附
Zehui Huang1, Fengyuan Chen2, Shikun Yang1
1College of Chemistry and Chemical Engineering, Shantou University, Shantou 515063, China.
Marine pollution bulletin
|May 3, 2025
概括
微塑料 (MPs) 从海水中吸收二甲 (DBP). 聚烯MP显示DBP吸附率高于聚乙烯MP,自然老化对这一过程的影响最小.
科学领域:
- 环境科学 环境科学
- 海洋生物学 海洋生物学
- 化学 化学 化学
背景情况:
- 微塑料 (MP) 是广泛存在的海洋污染物.
- 国会议员可以通过海洋食物网吸附和转移有害化学物质.
- 关于MPs在自然环境中对甲酸乙烯 (PAE) 吸附的研究有限.
研究的目的:
- 为了研究在聚乙烯 (PE) 和聚乙烯 (PS) 微塑料上二甲酸盐 (DBP) 的吸附.
- 描述自然衰老对MP表面特性和DBP吸附的影响.
- 为了比较自然海水中的MPs的DBP吸附率与超纯水的吸附率.
主要方法:
- 老化和未老化的PE和PSMP的表面特征.
- 用朗格穆尔-弗朗德利希模型对MPs进行DBP的吸附异热研究.
- 在天然海水和超纯水中对DBP吸附的分析.
主要成果:
- 自然老化显著改变了MP表面形态和纳米机械性能.
- 在异质的MP表面上,DBP吸附遵循多层过程.
- 聚烯MP表现出比PEMP更高的DBP吸附能力.
- 自然老化对DBP吸附有很小的影响,可能是由于竞争的表面变化.
- 由于离子竞争和MP聚合,天然海水中的"脱盐"效应不那么明显.
结论:
- 在海洋环境中,MP,特别是PS,可以吸收大量的DBP.
- 了解MP污染物相互作用对于评估生态风险至关重要.
- 海洋环境因素,如盐度和老化影响污染物吸附到MP.
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