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Perfluoroalkyl Compounds on the Microplastics Found in Sagami Bay and Effect of the Inflow Rivers
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Researchers investigated perfluoroalkyl compounds (PFCs) adsorbed onto microplastics collected from beaches around Sagami Bay, Japan, to trace the origin of the microplastics. They found that PFC adsorption patterns varied by plastic type but not clearly by geographic source. Polystyrene foam adsorbed higher amounts of PFCs per unit weight due to its large surface area, highlighting foam as an especially effective carrier of persistent organic pollutants.
Microplastics (MP) can cause damage to ocean ecosystem. The environmental problems due to MP contamination is attracting worldwide attention. In this study, the survey was conducted to clarify the origin of MP obtained on various beaches of Sagami Bay from the viewpoint of chemical adsorption. There was no clear difference in the amount of Perfluorinated Compounds (PFCs) adsorbed on various MP materials. PS foam with a large surface area adsorbed more PFCs per unit weight than resin.
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Adsorption of perfluoroalkyl substances on microplastics under environmental conditions
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Researchers examined the capacity of three types of microplastics to sorb 18 perfluoroalkyl substances from freshwater and seawater. They found that perfluorosulfonates and sulfonamides had the strongest tendency to adsorb onto microplastics, with polystyrene showing greater affinity for these chemicals than polyethylene. The study suggests that microplastics in aquatic environments can concentrate harmful PFAS compounds, potentially increasing exposure for organisms that ingest them.
Adsorption Characteristics of Pfcs and Pahs on Microplastics in Lake Biwa and Osaka Bay
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Researchers analyzed microplastics collected from Lake Biwa and Osaka Bay in Japan for the presence of perfluorinated compounds (PFCs) and polycyclic aromatic hydrocarbons (PAHs), finding that smaller microplastic particles tended to carry higher concentrations of these toxic chemicals. The results suggest that hydrophobic adsorption drives contaminant uptake, raising concerns about microplastics acting as vectors for hazardous pollutants.
The partition behavior of perfluorooctanesulfonate (PFOS) and perfluorooctanesulfonamide (FOSA) on microplastics
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This study examined the sorption of PFOS and FOSA — two persistent fluorinated chemicals — onto polyethylene, polystyrene, and PVC microplastics and found that sorption capacity varied by polymer type and was influenced by pH, salinity, and organic matter. The results suggest microplastics could act as transport vectors for these persistent pollutants in marine environments.
Insight into the effect of natural aging of polystyrene microplastics on the sorption of legacy and emerging per- and polyfluorinated alkyl substances in seawater
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Naturally aged polystyrene microplastics showed different sorption behavior for nine PFAS compounds compared to virgin microplastics, with environmental aging altering the physicochemical properties that determine how strongly microplastics bind these 'forever chemicals' in seawater.
Adsorption of perfluoroalkyl substances on polyamide microplastics: Effect of sorbent and influence of environmental factors
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Researchers studied how perfluoroalkyl substances (PFAS), a group of persistent industrial chemicals, bind to polyamide microplastics in water. They found that smaller microplastic particles absorbed dramatically more PFAS than larger ones, and that water chemistry conditions like pH and salinity influenced the process. The findings suggest microplastics can concentrate harmful chemicals and potentially increase human and wildlife exposure to PFAS in contaminated environments.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.