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Sorption of Tonalide, Musk Xylene, Galaxolide, and Musk Ketone by microplastics of polyethylene and polyvinyl chloride
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This study tested how synthetic musk fragrance chemicals (used in perfumes and personal care products) attach to polyethylene and PVC microplastics, finding they adsorb readily with equilibrium reached in about 10 hours. This means microplastics in waterways can pick up and transport fragrance chemicals, adding to the chemical cocktail they carry.
The effects of time, temperature, and salinity on the adsorption of Tonalide (AHTN), Musk Xylene (MX), Galaxolide (HHCB), and Musk Ketone (MK) by microplastics of polyethylene (PE) and polyvinyl chloride (PVC) are studied. Results indicate that the equilibrium sorption time was about 10 h and the adsorption kinetics model conformed to the first-order adsorption kinetic model and pseudo-second order kinetic model, this indicates that the main adsorption mechanism might be chemical adsorption and physical absorption. Adsorption reached a nadir at 15 °C and 14% salinity. The adsorption capacity gradually increases, and then decreases, finally increases with an increase in NaCl concentration. Due to the specific surface area and the pore volume of PVC was larger than PE, the adsorption capacity of PVC was higher than that of PE in the equal conditions.
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Sorption of three synthetic musks by microplastics
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Researchers examined the sorption of three synthetic musks — tonalide, musk xylene, and musk ketone — to polypropylene microplastics in simulated seawater, characterising equilibrium sorption times and the potential for microplastics to act as vectors for these organic pollutants.
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Researchers characterized how three pesticides and three personal care products sorb onto high-density polyethylene microplastics in seawater. They found that more hydrophobic compounds accumulated more readily on the plastic, and that significant desorption (over 30%) occurred within 24 hours, especially at higher contaminant concentrations. The study confirms that microplastics can act as both carriers and releasers of chemical pollutants in marine environments.
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This study modeled how chlorinated phenols — toxic water pollutants — stick to polyethylene and polyethylene terephthalate microplastics sourced from personal care products. The findings suggest microplastics can act as carriers for harmful chemicals in aquatic environments, potentially concentrating toxins and delivering them to organisms that ingest the particles.
Sorption of alkylphenols and estrogens on microplastics in marine conditions
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Researchers investigated the sorption of six endocrine-disrupting chemicals — including alkylphenols and estrogens — onto microplastics under marine conditions, supporting the hypothesis that microplastics act as a secondary contamination vector for aquatic organisms by concentrating pollutants.
Mechanisms of Sorption of Pharmaceutical and Personal Care Products to Microplastics
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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.