Microplastic Pollution in Freshwater Sediments: Spatial–Temporal Patterns

IF 8.1 2区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES
Laura Sforzi, Saul Santini, Chiara Sarti, Costanza Scopetani, Tania Martellini, Amina Mumtaz, Demetrio Randazzo, Alessandra Cincinelli
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Abstract

Purpose of review

Although research on microplastic (MP) pollution in freshwater has increased, much remains unknown about the fate and distribution of this pollutant in sediments. This review provides a global perspective on how research efforts and data collection are distributed, also exploring recent studies on factors that play a key role in MPs transport and influence MP distribution in freshwater sediments worldwide.

Recent findings

The role of human activities, precipitation and stormwater run-off, water flow, sediment grain size, and land use on the spatial and temporal distribution of MPs in sediments has been demonstrated, highlighting the complex interactions between these factors and MP pollution. MPs have been found in sediments of rivers, tributaries, and lakes, from urbanized to remote areas, with variations across regions, ecosystems, and temporal scales. To date, most studies are concentrated in Asia, with limited representativeness of other continents. In addition, limitations remain, as data variations between studies may result from different scales or analytical methods.

Summary

This review provides an overview of the spatiotemporal variation of MP pollution in freshwater sediments, highlighting knowledge gaps and challenges. Future research should aim to more geographically balanced studies, addressing both temporal and spatial aspects to better assess the long-term environmental and ecological impacts of MPs in freshwater systems. 

淡水沉积物中的微塑料污染:时空格局
尽管对淡水中微塑料污染的研究越来越多,但这种污染物在沉积物中的命运和分布仍不清楚。这篇综述提供了一个关于研究工作和数据收集如何分布的全球视角,也探讨了在全球淡水沉积物中MPs运输和影响MPs分布中起关键作用的因素的最新研究。人类活动、降水和雨水径流、水流、沉积物粒度和土地利用对沉积物中多磺酸盐时空分布的影响已经得到证实,这些因素与多磺酸盐污染之间存在复杂的相互作用。从城市化地区到偏远地区,在河流、支流和湖泊的沉积物中都发现了MPs,并且在区域、生态系统和时间尺度上存在差异。迄今为止,大多数研究都集中在亚洲,其他大洲的代表性有限。此外,由于研究之间的数据差异可能来自不同的尺度或分析方法,因此局限性仍然存在。本文综述了淡水沉积物中MP污染的时空变化,强调了知识空白和挑战。未来的研究应该着眼于更多的地理平衡研究,解决时间和空间方面的问题,以更好地评估淡水系统中MPs的长期环境和生态影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Current Pollution Reports
Current Pollution Reports Environmental Science-Water Science and Technology
CiteScore
12.10
自引率
1.40%
发文量
31
期刊介绍: Current Pollution Reports provides in-depth review articles contributed by international experts on the most significant developments in the field of environmental pollution.By presenting clear, insightful, balanced reviews that emphasize recently published papers of major importance, the journal elucidates current and emerging approaches to identification, characterization, treatment, management of pollutants and much more.
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