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Arsenic interaction with microplastics: Implications for soil-water-food nexus
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Adsorption mechanism of arsenic(V) on aged polyethylene microplastics: Isotherms, kinetics and effect of environmental factors
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When plastic waste breaks down in the environment (from sun, acids, or other weathering), its surface changes in ways that make it much better at binding arsenic, a toxic contaminant commonly found in water. This matters because these "aged" microplastics, which are now widespread in our water supplies, could act as carriers that transport arsenic through waterways and potentially into the food chain or drinking water. The findings suggest that weathered microplastics might pose a greater risk for spreading arsenic contamination than fresh plastic particles, though more research is needed to understand what this means for human exposure.
Interactıon of Micro-Nanoplastics and Heavy Metals in Soil Systems: Mechanism and Implication
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Researchers examined how micro- and nanoplastics interact with heavy metals in soil, finding that plastics can alter metal mobility, bioavailability, and toxicity through adsorption and chemical reactions, raising concern that plastic pollution may worsen the risk posed by existing heavy metal contamination in agricultural and urban soils.
Elevated CO2 Synergizes with Nanoplastics to Intensify Arsenic Mobilization, Biotransformation, and Plant Uptake in Soil-Spinach Systems
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This research examined how earthworm activity interacts with plastic mulch film residues in agricultural soils, measuring changes in soil enzymatic activity and earthworm behavior in plastic-contaminated plots. The study found that microplastics from mulch films suppress soil enzyme function, with implications for soil health and agricultural productivity.
Interactions of Microplastics with Co-Occurring Pollutants in Soil Environment
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This review examines how microplastics in soils interact with co-occurring pollutants including heavy metals, organic contaminants, and biological pollutants, analyzing the mechanisms and environmental factors governing these complex interactions. Because microplastics act as vectors that adsorb and transport other contaminants through soil, understanding these interactions is critical for assessing the combined toxicity and ecological risk of plastic pollution in terrestrial food-producing systems.
Interactions Between Microplastic and Heavy Metals in the Aquatic Environment: Implications for Toxicity and Mitigation Strategies
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This review examined how microplastics interact with heavy metals in aquatic environments, showing that temperature, pH, salinity, polymer type, and particle size modulate adsorption, desorption, and combined toxicity, with MPs acting as mobile heavy metal carriers throughout aquatic food webs. Understanding the synergistic toxicity of MPs and heavy metals is essential because their combined effects on aquatic organisms—and on humans consuming contaminated seafood—likely exceed the hazard of either pollutant alone.
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