AI Article Synopsis
- Hydrodynamic conditions greatly influence the behavior of microplastics (MPs) in freshwater environments, highlighting the need for more research in this area.
- A new framework combining system monitoring and numerical simulations was applied to Dongting Lake, revealing that about 199.29 trillion MP items entered or exited the lake in 2021.
- The study identified four areas where MPs accumulate, threatening ecological integrity and food security, and offers valuable data for managing and reducing MP pollution in freshwater ecosystems.
Article Abstract
Hydrodynamic conditions have a significant effect on the fate of microplastics (MPs). Moreover, research on the relation between hydrodynamic conditions and MPs in freshwater environments is critical and unquantified. In this regard, herein, a methodological framework integrating system monitoring with numerical simulation has been developed and successfully implemented for Dongting Lake, a large freshwater lake fed by multiple rivers. According to time-series monitoring and hydrological data, 199.29/128.50 trillion MP items entered or exited Dongting Lake in 2021. In addition, a coupled numerical model identified four key areas of MP accumulation, which overlap with nature reserves and agricultural zones, posing considerable risks to the ecological gene pool and food security. The quantitative results obtained using the developed framework enable calculation of MP inflow and outflow fluxes and facilitate analysis of MP transportation. Overall, this study provides a scientific basis for preventing and controlling MP pollution in Dongting Lake and offers valuable insights for future research on related issues in freshwater ecosystems.
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| http://dx.doi.org/10.1016/j.jhazmat.2024.136049 | DOI Listing |
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