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Behaviour, ecological impacts of microplastics and cadmium on soil systems: A systematic review
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This systematic review examines how microplastics and cadmium interact in soil, finding that they can make each other more harmful. Microplastics can carry toxic cadmium further through soil and increase its uptake by plants, which could mean more heavy metal contamination in the food we eat.
Owing to their low cost, high plasticity, and corrosion resistance, plastic products are widely used across various industries. However, these plastic products can break down into microplastics (MPs) through several processes, including natural weathering, mechanical wear and tear, industrial activities, such as fine powder production, and other human-induced processes. MPs can contaminate the environment and pose a significant threat to human health and safety. Additionally, MPs can be horizontally and vertically distributed within the soil environment. MPs can interact with cadmium (Cd) in Cd-contaminated soils, thereby forming co-exposed stress risks. Considering the widespread distribution of MPs and Cd in soil, this article reviews their interactions and the ecological effects of combined stress through literature visualization and analysis. The systematic review shows that combined MP–Cd pollution can significantly alter the physico-chemical properties of soil, thus influencing individual contaminants (Cd or MPs) and modifying the soil microbial community. The migration of MPs and Cd can contribute to oxidative stress on soil animals and plants, with potential implications for human health through the aboveground food chain. This paper aims to identify future research directions and priorities in addressing combined stress pollution and provide scientific guidance for the remediation and management of MP-Cd joint exposure site environments.
More Papers Like This
[Research Progress on the Impacts and Health Effects of Combined Contamination of Microplastics and Cadmium in Soils].
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This review paper looks at what happens when tiny plastic particles (microplastics) and the toxic metal cadmium mix together in soil, both of which can end up in the food we grow. The research so far suggests microplastics can actually make cadmium more easily absorbed by plants and organisms, potentially making its toxic effects worse rather than diluting them. Since this combo could affect crops we eat, the authors say scientists urgently need to study these interactions more closely to understand the real-world risks to our health.
Unveiling the impacts of microplastics on cadmium transfer in the soil-plant-human system: A review
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A meta-analysis found that microplastics significantly increase soil cadmium bioavailability by 6.9% and cadmium accumulation in plant shoots by 9.3%, through both direct surface adsorption and indirect modification of soil pH and dissolved organic carbon. This enhanced cadmium mobility through the soil-plant-human food chain amplifies health risks, as co-ingestion of microplastics and cadmium increases cadmium bioaccessibility and tissue damage.
Microplastic–cadmium co-contamination in agricultural soils: A critical review of interactions, transfer, and plant exposure
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Plastic bits in farm soil don't just sit there, they can actually change how cadmium, a toxic heavy metal, moves through soil and gets absorbed by crops, sometimes making it worse and sometimes better, depending on conditions. This matters because it means the food we eat could carry more (or less) heavy metal contamination than expected based on soil testing alone, but scientists reviewing the existing research say the science is still too inconsistent to know exactly when or why this happens. More standardized studies are needed before we can predict real-world risks to the food supply.
Microplastic–cadmium co-contamination in agricultural soils: A critical review of interactions, transfer, and plant exposure
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Tiny plastic bits in farm soil don't just sit there, they can actually change how cadmium (a toxic heavy metal) moves through soil and into crops, sometimes making it worse, sometimes better, depending on conditions we don't fully understand yet. This matters because cadmium buildup in food crops is a real health concern, and this review of existing research shows scientists still don't have a clear picture of when plastic pollution might make heavy metal contamination in our food more likely. More consistent research is needed before we can predict, or prevent, this risk.
Coexistence of microplastics and heavy metals in soil: Occurrence, transport, key interactions and effect on plants
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This review examines how microplastics and heavy metals like lead, cadmium, and arsenic interact in soil, often creating combined toxic effects on plants that differ from either pollutant alone. These interactions are relevant to human health because contaminated crops can transfer both microplastics and heavy metals to people through the food supply.
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