Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 438, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2022.129515
Keywords
Plastics; Macroscopic transport; Trophictransfer; Internalization
Categories
Funding
- Program for the National Natural Science Foundation of China [51879101, 51579098, 51779090, 51709101, 51521006, 51809090, 51809293, 51909084, 52109083]
- National Program for Support of Top-Notch Young Professionals of China (2014)
- National innovative Research Talent Promotion Program of China (2021)
- Program for Changjiang Scholars and Innovative Research Team in University [IRT-13R17]
- Hunan Provincial Science and Technology Plan Project [2018SK20410]
- Science and Technology Innovation Program of Hunan Province [2020RC4014]
- Natural Science Foundation of Hunan Province, China [2021JJ40100]
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This review discusses the decomposition and dispersal processes of plastics in the environment, as well as their impacts on ecosystems. It focuses on the transport and uptake mechanisms of plastic particles in macroscopic environments, and the internalization processes of these particles in organisms. Lastly, it highlights the bioaccumulation and trophic transfer of plastic particles in the food chain.
Plastics enter the environment and break up into microplastics (MPs) and even nanoplastics (NPs) by biotic and abiotic weathering. These small particles are widely distributed in the environmental media and extremely mobile and reactive, easily suspending in the air, infiltrating into the soil, and interacting with biota. Current research on MPs/NPs is either in the abiotic or biotic compartments, with little attention paid to the fact that the biosphere as a whole. To better understand the complex and continuous movement of plastics from biological to planetary scales, this review firstly discusses the transport processes and drivers of microplastics in the macro-scopic compartment. We then summarize insightfully the uptake pathways of MPs/NPs by different species in the ecological compartment and analyze the internalization mechanisms of NPs in the organism. Finally, we high-light the bioaccumulation potential, biomagnification effects and trophic transfer of MPs/NPs in the food chain. This work is expected to provide a meaningful theoretical body of knowledge for understanding the biogeo-chemical cycles of plastics.
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