宏观塑料的命运和运输建模:淡水作为主要水库
David Mennekes1, Yvette A M Mellink2,2, Louise J Schreyers2
1Technology and Society Laboratory, Empa-Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland.
概括
淡水中的巨型塑料污染是一个主要问题. 建模显示,几乎所有的塑料排放都留在瑞士境内,河流作为重要的长期水库.
科学领域:
- 环境科学 环境科学
- 水文学的水文学
- 生态毒理学 生态毒理学
背景情况:
- 淡水中的巨型塑料污染对生态系统和人类健康构成风险.
- 了解巨型塑料的运动和持久性对于有效管理至关重要.
研究的目的:
- 在国家范围内建模巨型塑料的命运和运输.
- 评估瑞士河流和湖泊对巨型塑料的保留能力.
主要方法:
- 为宏观塑料的命运和运输开发了一种国家规模的建模方法.
- 使用监测数据和实地实验结果参数化了命运模型.
- 将模型应用于瑞士的河流和湖泊,包括敏感性分析.
主要成果:
- 98%的巨型塑料排放到淡水中仍然在瑞士.
- 在水域和河流中观察到巨型塑料保留的高变化.
- 沿着河岸的持续保留 (漂流) 占保留排放的至少70%.
结论:
- 河流作为巨型塑料的重要长期储存库.
- 与堤或湖泊相比,海是占主导地位的保留机制.
- 该研究通过国家级建模证实了"河流作为塑料水库"的概念.
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