摘要

微塑料研究主要集中在公海上，而河流羽流仍然很大程度上尚未开发，尽管它们被假设为沿海水域的微塑料源。这项工作旨在模拟Po河排放的微塑性颗粒（1-5毫米）的沿海积累超过1.5。可以使用（1）基于水动力学和（2）遥感预测河流诱发的相邻海岸微塑性聚集的累积。基于建模。模型积累图在九个海滩进行了取样验证，沉积物微塑料浓度达到水动力学模型显示，排放的颗粒量仅与海滩速率半耦合，这是强抗体并且在前十天内依赖。发现遥感模拟能更好地捕捉河口相对强度，并且发现积累模式与水动力模型一致。该构成为开发运行监测系统奠定了基础，以评估主要河流排放的微塑料污染。

Microplastic research has mainly concentrated on open seas, while riverine plumes remain largely unexplored despite their hypothesized importance as a microplastic source to coastal waters. This work aimed to model coastal accumulation of microplastic particles (1-5 mm) emitted by the Po River over 1.5 years. We posit that river-induced microplastic accumulation on adjacent coasts can be predicted using (1) hydrodynamic-based and (2) remote sensing-based modelling. Model accumulation maps were validated against sampling at nine beaches, with sediment microplastic concentrations up to 78 particles/kg (dry weight). Hydrodynamic modelling revealed that discharged particle amount is only semi-coupled to beaching rates, which are strongly mouth dependent and occur within the first ten days. Remote sensing modelling was found to better capture river mouth relative strength, and accumulation patterns were found consistent with hydrodynamic modelling. This methodology lays groundwork for developing an operational monitoring system to assess microplastic pollution emitted by a major river.

https://www.ncbi.nlm.nih.gov/pubmed/30660307