在蒙古的城市河流环境中,塑料相关的金属化物
Batdulam Battulga1, Mariko Atarashi-Andoh2, Jun Koarashi2
1Department of Geography, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan; Nuclear Science and Engineering Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan.
Ecotoxicology and environmental safety
|June 7, 2023
概括
河流中的塑料垃圾作为金属污染的载体. 中等尺寸的聚烯泡塑料积累了更高的污染物度,表明它们在水生生态系统中运输危险化学品中的作用.
科学领域:
- 环境科学 环境科学
- 生态毒理学 生态毒理学
- 材料科学 材料科学 材料科学
背景情况:
- 塑料垃圾是河流系统中普遍存在的环境污染物.
- 了解塑料垃圾和污染物之间的相互作用对于评估生态风险至关重要.
研究的目的:
- 研究从图尔河的聚烯泡 (PSF) 塑料上积累的金属化物.
- 为了确定塑料尺寸和金属 (化物) 吸附之间的关系.
- 探索塑料降解和生物膜形成在污染物积累中的作用.
主要方法:
- 从图尔河的洪水平原收集PSF塑料.
- 使用超声波和过氧化物氧化提取金属的提取.
- 分析金属 (?? 化物) 度和尺寸依赖的关联.
- 扫描电子显微镜 (SEM) 检查塑料表面形态和附着颗粒.
主要成果:
- 聚乙烯泡塑料作为城市河流中的金属化物载体.
- 中等尺寸的PSF显示出比宏观和微型塑料更高的金属 (B,Cr,Cu,Na,Pb) 积累.
- SEM揭示了附着矿物颗粒和微生物的降解塑料表面.
- 丰富比率表明塑料上持续积聚重金属.
结论:
- 塑料碎片,特别是退化的PSF,在水生环境中促进危险金属的运输.
- 塑料的尺寸,表面特性和生物膜的发展影响了污染物吸收.
- 需要进一步研究河流中的塑料污染物相互作用的命运和行为.
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