在一年的淡水冰中微塑料的积累:一项为期四年的监测研究揭示了微塑料的冬季动态
Tuomo Soininen1, Emilia Uurasjärvi2, Jouni Sorvari3
1University of Eastern Finland, Department of Technical Physics, Yliopistonranta 8, 70210 Kuopio, Finland.
The Science of the total environment
|November 18, 2024
概括
微塑料在淡水冰中积累的度明显高于地表水,作为一个季节性水库. 这项研究强调了监测冰对于了解微塑料污染动态的重要性.
科学领域:
- 环境科学 环境科学
- 水生生态学 水生生态学
- 污染研究 污染研究
背景情况:
- 微塑料 (MP) 污染很普遍,但对淡水冰的研究有限.
- 了解冬季MP动态对于淡水系统的季节性流量评估至关重要.
研究的目的:
- 量化一年的淡水冰中的微塑料度和特征.
- 研究淡水冰作为微塑料的临时储存库的作用.
- 分析冰融释放的沉积物中的季节性MP积累.
主要方法:
- 在四年内从四个城市/郊区地点收集了48个淡水冰样 (每样2.95.0升).
- 对季节性MP分辨率进行年度分层底层沉积物核心分析.
- 识别的MP聚合物类型和测量的颗粒大小.
主要成果:
- 冰中的微塑料度在144MPs/L之间,比地表水高一到两倍.
- 平均MP大小为142±177微米;常见的聚合物包括聚烯,聚乙烯和聚乙烯二甲.
- 沉积物MP积累在春季洪水期间达到峰值,这表明从融化冰和雪中释放出来.
结论:
- 淡水冰是微塑料的重要时间存储库.
- 在研究的城市/郊区网站上,MP特性是一致的.
- 监测包括冰在内的各种环境组件对于全面的PM污染评估至关重要.
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