We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Co-exposure of Microplastics and Polychlorinated Biphenyls in Aquatic Ecosystems: a Systematic Review of Impact Mechanisms and Research Directions
AI summary Read the abstract
This systematic review examined how microplastics and polychlorinated biphenyls (PCBs) interact in aquatic environments. The research shows that microplastics can carry toxic PCBs into fish and other organisms, and the combined exposure may be more harmful than either pollutant alone, which matters because these contaminated organisms can end up on our plates.
Microplastics (MPs) and polychlorinated biphenyls (PCBs) pollution represents a major global environmental challenge that requires comprehensive understanding of their combined effects. Recent research shows that MPs can transport PCBs into aquatic organisms, creating complex synergistic interactions that may exceed the toxicity of individual pollutants. This systematic review examines the combined effects of MP-PCB exposure on aquatic organisms based on data from Web of Science, Scopus, PubMed, Science Direct databases. Our analysis revealed that polyethylene and polystyrene were the most studied MP types, with PCB concentrations on MPs ranging from nanograms to micrograms per gram. However, most studies used MP concentrations 2 - 7 orders of magnitude higher than environmental levels, limiting their environmental relevance. Experimental designs have evolved from basic exposure methods to complex models simulating food chain interactions, with exposure durations ranging from acute to chronic timeframes. Bioaccumulation studies demonstrate that MPs act as vectors for PCBs transport, extending PCB residence time by 10 - 20 fold compared to individual exposure. The biomarker assessment systems have expanded to include 33 multidimensional indicators, with antioxidant enzymes and detoxification enzymes showing the highest sensitivity to combined exposure effects. Histological assessments provide additional evidence of severe tissue damage in liver and intestine. Current research faces important limitations including unrealistic exposure scenarios and methodological inconsistencies that reduce environmental relevance. Future research should adopt standardized procedures using environmentally realistic concentrations and integrated multidisciplinary approaches to enhance understanding of impact mechanisms and inform effective management strategies.
More Papers Like This
The Unseen Threat of the Synergistic Effects of Microplastics and Heavy Metals in Aquatic Environments: A Critical Review
AI summary Read the abstract
This review examines how microplastics and heavy metals interact in water environments, finding that microplastics can attract and concentrate toxic metals on their surfaces through various chemical forces. This combination effect is a concern for human health because contaminated microplastics carrying heavy metals can be consumed through seafood, delivering a double dose of pollutants.
Research progress on adsorption of polychlorinated biphenyls by microplastics and toxic effects of their combined exposure on animals
AI summary Read the abstract
Tiny plastic particles in the ocean can soak up toxic industrial chemicals called PCBs, and fish absorb both together — meaning the fishmeal made from these fish (a common ingredient in animal feed) can pass these combined pollutants up the food chain into the meat, eggs, or dairy we eat. This review paper pulls together existing research showing that plastic-chemical combos may harm animals' digestive, nervous, and other body systems more than either pollutant alone, highlighting a hidden risk in our food supply that needs more study and better farming safeguards.
Co-exposure of mercury and microplastics in aquatic food webs: A review of sources, bioaccumulation, and ecotoxicological risks
AI summary Read the abstract
This review analyzed 92 studies to examine how mercury and microplastics interact when they co-occur in aquatic food webs. Researchers found a strong correlation between mercury levels in water and fish tissues, with some species accumulating extremely high mercury concentrations. The study highlights that the combined presence of these two contaminants may amplify ecological risks beyond what either pollutant poses alone.
Microplastics as Carriers of Co-Occurring Pollutants in Freshwater Ecosystems: Mechanisms, Environmental Fate, and Ecotoxicological Risks
AI summary Read the abstract
Microplastics in rivers and lakes don't just pollute water on their own, this review of existing research shows they can act like tiny magnets, picking up heavy metals, pesticides, and other chemicals and carrying them through the food chain. That means fish and other wildlife may be exposed to a more toxic combo than either the plastic or the chemicals alone, which raises concerns for anyone eating freshwater fish or relying on these ecosystems, though scientists say more research is needed to fully understand the long-term risks to human health.
Co-occurrence of microplastics and organic/inorganic contaminants in organisms living in aquatic ecosystems: A review
AI summary Read the abstract
This review examines studies that measured both microplastics and chemical pollutants (organic and inorganic) in aquatic organisms at the same time. A positive correlation was found between microplastic levels and certain pollutants in organisms, suggesting microplastics may help transport contaminants into living things. The findings raise concerns that seafood contaminated with microplastics could also carry higher levels of toxic chemicals into the human diet.
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.