Interactive Effect of Urbanization and Flood in Modulating Microplastic Pollution in Rivers
SSRN, ISSN: 1556-5068
2022
- 5Citations
- 244Usage
- 5Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Article Description
Freshwater ecosystems play an important role in transporting and accumulating microplastics. Spatial and temporal variability in microplastic pollution can create critical spots and moment of elevated pollution, however their interactive effects are still poorly understood. The aim of this study was to assess the interaction between urbanisation and flood episodes on river microplastic pollution. Water surface was sampled in two sites of the Garonne River, upstream and downstream a large urban area during two flood episodes. Samples were chemically digested to facilitate particles isolation and microplastics (700 µm – 5 mm) were characterized through infrared spectroscopy (ATR-FTIR). Microplastic concentration increased by 5 to 8 fold during flood episodes, driven by river discharge. This increase was more important in the downstream site. During the flood there was an overall increase of larger particles in water surface, but only in the downstream site the microplastic distribution in colors and polymeric composition significantly changed. Principal component analysis of infrared spectra from polyethylene microplastics revealed that the main variance in the spectral region corresponded to hydroxyl and carbonyl groups. The carbonyl content in microplastics was significantly higher for particles collected during the flood, likely indicating a higher oxidation state. Urbanisation modulates freshwater microplastic pollution during floods, and changes in microplastic physicochemical profile should be further integrated within toxicity studies to evaluate risks potentially elevated to animal and human health.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85179541211&origin=inward; http://dx.doi.org/10.2139/ssrn.4045864; https://www.ssrn.com/abstract=4045864; https://dx.doi.org/10.2139/ssrn.4045864; https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4045864; https://ssrn.com/abstract=4045864
Elsevier BV
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