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Interactions between microplastics (MPs) and trace/toxic metals in marine environments: implications and insights—a comprehensive review
Summary
This review examines how microplastics interact with trace and toxic metals in ocean environments, finding that plastic particles can adsorb metals onto their surfaces and alter how those metals move through marine ecosystems. These interactions can increase metal toxicity, reduce the availability of essential nutrients for marine life, and disrupt ocean food chains in ways that may ultimately affect seafood safety for humans.
Microplastics (MP) pollution is a pressing concern in today's marine environments. MPs can significantly affect marine ecosystems by altering nutrient and pollutant dynamics. This review analyses the existing literature to investigate interactions between MPs and micronutrients/pollutants, specifically trace and toxic metals in marine environments. It explores the adsorption of metals onto MP surfaces, emphasizing kinetics, isotherms, and underlying mechanisms of the process. The review highlights the potential consequences of MPs on the biogeochemical cycles of trace and toxic metals, emphasizing disruptions that could result in metal toxicity, metal limitations, reduced bioavailability, and adverse effects on primary productivity in marine ecosystems. It further underscores the need for future research to unravel the wide-ranging implications of MPs on trace and toxic metal cycling in marine ecosystems and their broader environmental impacts.
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