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Los microplásticos como vehículo del cadmio: ¿Una interacción peligrosa para los organismos acuáticos?
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This study investigates whether microplastics act as vectors for cadmium, a toxic heavy metal, enhancing its uptake and biological impact beyond what either stressor causes alone. Experimental results are evaluated for evidence of synergistic toxicity, where the combined effect exceeds the sum of individual exposures. The findings are relevant to assessing the compounded health risks posed by microplastic-contaminant interactions in polluted environments.
El uso indiscriminado de plásticos ha llevado a su presencia como desecho en prácticamente todo el planeta. Este material se fragmenta en pequeñas piezas, conocidas como microplásticos (MPs), que se dispersan fácilmente. En los ambientes acuáticos, los MPs están ampliamente distribuidos y pueden interactuar con otros contaminantes, como el cadmio (Cd), un metal tóxico incluso a bajas concentraciones. La adsorción de Cd en MPs facilita su ingreso en los organismos que los ingieren accidentalmente, lo que podría amplificar su toxicidad debido a un efecto sinérgico. Aunque esta interacción tiene el potencial de causar mayores daños en la salud de los organismos, ha sido poco estudiada. Este trabajo tiene como objetivo realizar una revisión sintética de investigaciones recientes sobre la interacción y los efectos del Cd y los MPs en los organismos acuáticos.
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Microplastics as a vehicle of heavy metals in aquatic environments: A review of adsorption factors, mechanisms, and biological effects
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This review summarizes how microplastics in water can absorb and carry toxic heavy metals like lead and cadmium, making them more dangerous to aquatic life than either pollutant alone. Environmental factors such as water acidity, salinity, and organic matter influence how much metal sticks to microplastic surfaces. Since contaminated seafood is a major source of human exposure, understanding these interactions is important for assessing health risks.
Interactive behavior of cadmium ions onto polyethylene microplastics in aquatic system
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Researchers examined how polyethylene microplastics absorb and release cadmium, a toxic heavy metal, in freshwater conditions, finding that acidic environments can cause near-complete release of cadmium back into the water. This raises concern that microplastics carrying heavy metals could deliver those toxins to aquatic organisms through their digestive systems.
Évaluation de risques environnementaux de micro et macroplastiques en interaction avec des nanoparticules métalliques ou du cadmium sur les organismes aquatiques.
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This doctoral thesis investigated the ecotoxicological effects of microplastics, biodegradable plastics, and metal nanoparticles on marine organisms including oysters, microalgae, and copepods in estuarine and coastal environments. It found synergistic interactions between these pollutants that increased toxicity beyond individual exposures.
Additive effects of microplastics on accumulation and toxicity of cadmium in male zebrafish
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Researchers exposed adult zebrafish to polyethylene microplastics and cadmium, both individually and in combination, for 21 days. They found that microplastics and cadmium together produced additive toxic effects, increasing cadmium accumulation in fish tissues, altering behavior, and causing more severe organ damage. The study suggests that microplastics in contaminated waterways may worsen the harmful effects of heavy metals on aquatic life.
Evaluation of Cd Adsorption Characteristic by Microplastic Polypropylene in Aqueous Solution
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Researchers examined how microplastic polypropylene particles adsorb cadmium from aqueous solutions, finding that the plastic acts as a carrier for this toxic heavy metal. The results suggest that microplastics can accumulate cadmium in aquatic environments and potentially deliver it to organisms that ingest the particles.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.