德国韦塞尔河的微塑料污染季节性变化
Sonya R Moses1, Martin G J Löder1, Frank Herrmann2
1Department of Animal Ecology I and BayCEER, University of Bayreuth, Universitätsstr. 30, 95440 Bayreuth, Germany.
The Science of the total environment
|August 22, 2023
概括
每月河流采样显示微塑料 (MP) 度与排放和悬浮物质相关,特别是较小的MP. 河床和下水是MP污染的主要来源.
科学领域:
- 环境科学 环境科学
- 生态毒理学 生态毒理学
- 水的质量 水的质量
背景情况:
- 河流是微塑料 (MP) 环境分布的重要途径.
- 关于河流季节性MP变化的研究是有限的,大多数研究缺乏高时间分辨率.
研究的目的:
- 调查河水中微塑料丰度的季节性变化.
- 确定影响微塑料度在一年内潜在的驱动因素.
主要方法:
- 在德国韦塞尔河 (Weser River) 一年内每月取水面微塑料 (105000μm) 样本.
- 使用的大型MP (l-MP; 5005000μm) 的曼塔网和小型MP (s-MP; 10500μm) 的过系统.
- 微塑料的化学识别使用减弱总反射率里埃变形红外光谱 (ATR-FTIR) 和焦平面阵列微里埃变形红外光谱 (FPA-μFTIR).
主要成果:
- 在s-MP度 (10149μm) 与河流排水 (直接流水) 和悬浮颗粒物 (SPM) 之间发现了强烈的,取决于大小的正相关性.
- 大国会议员 (l-MPs) 表现出不同的环境行为,不遵循与s-MPs相同的模式.
- 与之前的研究相比,对于更广泛的MP大小范围,获得了更高的时间分辨率数据.
结论:
- 微塑料的释放受到高排放事件期间河床再悬浮的影响.
- 降水驱动的土壤侵蚀和城市排水 (例如雨水下水道) 是引入微塑料和SPM的重要来源.
- 这些发现为进一步研究生态系统内和生态系统之间微塑料运输动态提供了基础.
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