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Microplastic properties and environmental conditions influence PAH sorption and bioavailability to copepods
AI summary
Researchers proposed a synthetic biology approach to engineer marine microorganisms capable of degrading plastic polymers in the open ocean. The conceptual framework outlined genetic modifications to enhance plastic-binding proteins and polymer hydrolase activity while incorporating safety containment mechanisms to prevent environmental spread.
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Fugacity analysis of polycyclic aromatic hydrocarbons between microplastics and seawater
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Fugacity analysis of polycyclic aromatic hydrocarbons (PAHs) in open ocean water and polyethylene plastic debris shows that heavier PAHs are thermodynamically driven from seawater onto plastic surfaces, but the transfer of these contaminants from plastics to organisms appears minimal for environmental concentrations. However, chemical additives embedded in plastics may slowly leach into surrounding water, posing a more direct ecotoxicological risk than sorbed PAHs.
Quantification of PAHs, PCBs and Pesticides adsorbed by plastic waste in the Togolese marine environment
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Researchers quantified polycyclic aromatic hydrocarbons, PCBs, and pesticides adsorbed onto plastic waste collected from Togo's marine environment. The findings confirm that ocean plastics act as concentrators of toxic legacy chemicals, amplifying their potential harm to marine life and humans who consume seafood from these waters.
Ecological Effects of Chemical Contaminants Adsorbed to Microplastics
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Microplastics act as vectors for adsorbed chemical contaminants including pesticides, heavy metals, and persistent organic pollutants, amplifying their transport and bioavailability in aquatic and soil ecosystems. The combined exposure to plastic particles and their chemical cargo poses greater ecotoxicological risks than either contaminant class alone.
Ecological Effects of Chemical Contaminants Adsorbed to Microplastics
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Researchers reviewed how chemical contaminants that bind to microplastics — including pesticides and heavy metals — affect aquatic and soil organisms, finding that microplastics can both concentrate toxins and amplify their biological impact. This so-called Trojan horse effect may make microplastic pollution more ecologically harmful than the plastic alone would suggest.
Pollutants Bioavailability and Toxicological Risk from Microplastics
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Researchers reviewed how microplastics act as carriers for toxic chemicals, making them available to living organisms across all environments — from mountain peaks to ocean trenches. The combined chemical and physical burden microplastics place on organisms raises significant concerns for long-term human and ecological health.
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.