Microplastic-mediated environmental behavior of metal contaminants: mechanism and implication

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Abstract
Microplastics (MPs) and metals are currently two of the most concerning environmental pollutants due to their persistent nature and potential threats to ecosystems and human health. This review examines the intricate interactions between MPs and metals in diverse environmental compartments, including aquatic, terrestrial, and atmospheric environments by focusing on the complex processes of adsorption and desorption and the mechanisms that govern these interactions. MPs act as carriers and concentrators of metals in aquatic and terrestrial environments, affecting the bioavailability and toxicity of these contaminants to aquatic and terrestrial organisms. This review highlights the existing challenges and constraints associated with current analytical methods, including microscopy, spectroscopy, and isotherm models in studying microplastic-heavy metal interactions. Moreover, we identified the knowledge gaps and future research directions that can enhance our understanding of the dynamic interplay between MPs and metals in various environmental settings. Graphical Abstract
Funding Information
  • he National Key Research and Development Program of China (2023YFC3711500)

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