从陆地到海洋:在沿海沉积物中追踪微塑料的水文来源
Fan Liu1, Claudia Lorenz2, Guohan Zhao3
1Department of the Built Environment, Aalborg University, Thomas Manns Vej 23, 9200 Aalborg, Denmark.
Environmental research
|June 12, 2025
概括
确定内陆微塑料来源是一项挑战. 一个GIS水文工具跟踪了从丹麦溪流到海岸的微塑料 (≥10μm),揭示了与纤维/PVC和雨水与聚烯 (PP) 相关的废水废水.
科学领域:
- 环境科学 环境科学
- 水文学的水文学
- 海洋污染 海洋污染
背景情况:
- 陆地活动是海洋微塑料污染的主要来源.
- 追踪微塑料的特定内陆来源和运输途径是复杂的,特别是在像丹麦这样复杂的河流网络的地区.
- 通过溪流的陆地-海洋连接使得理解从各种内陆排放到沿海地区的微塑料流动变得复杂.
研究的目的:
- 开发和应用基于GIS的水文源追踪方法,以确定丹麦内陆的微塑料来源及其运输路线.
- 确定丹麦沿海沉积物中发现的微塑料 (≥10微米) 的类型和来源.
- 调查内陆排放类型和微塑料特性之间的相关性.
主要方法:
- 从13个丹麦沿海监测站收集了微塑料样本.
- 使用基于焦点平面阵列的里叶变换红外 (FPA-μFTIR) 成像分析了微塑料.
- 利用基于GIS的水文工具来选河流网络并确定潜在的内陆来源 (废水排放,雨水排放,综合下水道溢出).
主要成果:
- 在所有沿海站检测到微塑料,其丰富度,聚合物类型,形状和大小各不相同.
- 废水废水与纤维和聚乙烯 (PVC) 有正相关性.
- 雨水排放和综合下水道溢出 (CSO) 与聚烯 (PP) 相关联.
结论:
- 基于GIS的水文工具有效地作为一种早期选方法,用于识别海洋微塑料的内陆来源.
- 内陆排放在将不同类型的微塑料运送到沿海环境中发挥着重要作用.
- 调查结果为有针对性的减缓策略和沿海地区优化监测提供了关键数据.
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