We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Comparative role of biofilm-covered microplastic and sand particles as vectors of ¹⁴C-PCB-153 to Paracentrotus lividus
Summary
This study tested whether biofilm-covered microplastics transfer PCBs to marine organisms more effectively than biofilm-covered sand particles. Findings indicated that natural particles and microplastics showed comparable vector activity, suggesting the unique vector role of microplastics may be overstated.
Microplastics (MPs) are contaminants of concern per se, but also based on their ability to concentrate and disseminate environmental contaminants (such as polychlorinated biphenyls; PCBs), acting as vectors for the transfer of toxic chemicals into marine organisms. However, the relevance of the role of MPs as vectors of contaminants adsorbed onto their surfaces (i.e., co-contaminant) is currently a matter of debate highlighting the hypothesis that MPs would play a minor role as vectors compared to naturally occurring particles (e.g. sediments) because of their relative abundance in the environment. The present study compares the role of biofilm-covered microplastics (500-600 µm; negatively buoyant polyethylene beads) and sand particles as vectors of ¹⁴C-PCB-153 into adult specimens of the sea urchin Paracentrotus lividus. Results showed that after 14 days of exposure, the transfer of ¹⁴C-PCB-153 from biofilm-covered particles to sea urchin tissues occurred to a similar extent for both types of particles, suggesting that MPs located on the seafloor may act as vectors of PCB-153 in a similar way than other natural particles such as sand. Also see: https://micro2024.sciencesconf.org/558786/document
Sign in to start a discussion.
More Papers Like This
Comparative role of biofilm-covered microplastic and sand particles as vectors of ¹⁴C-PCB-153 to Paracentrotus lividus
This study compared the ability of biofilm-covered microplastics versus biofilm-covered sand to act as vectors for polychlorinated biphenyls (PCBs) in marine organisms. The results showed that the vector role of microplastics for toxic chemicals is less significant than previously assumed when compared to natural particles.
Role of microplastics in the bioaccumulation and biological effects of PCB-153 on Paracentrotus lividus
This study examined whether microplastics serve as meaningful vectors for PCB-153 bioaccumulation in marine organisms compared to natural particles. Results indicated that natural organic particles were often more significant carriers than microplastics, challenging the assumption that MPs are the primary route of contaminant uptake.
Comparison of biofilm-covered microplastics and sand particles as vectors of PCB-153 to Paracentrotus lividus
Researchers compared the ability of biofilm-covered microplastics versus sand particles to act as vectors delivering PCB-153 to the sea urchin Paracentrotus lividus. Microplastics transferred more PCB-153 to sea urchin tissues than sand did, and biofilm presence on plastic surfaces influenced the magnitude of pollutant transfer.
Differential bioavailability of polychlorinated biphenyls associated with environmental particles: Microplastic in comparison to wood, coal and biochar
Researchers compared the bioavailability of PCBs associated with environmental plastic pellets versus sediment to marine organisms, finding that the chemical matrix affects how much PCB is transferred from plastic to animal tissue.
Adsorption and Desorption Behaviour of Polychlorinated Biphenyls onto Microplastics’ Surfaces in Water/Sediment Systems
Researchers evaluated the adsorption and desorption behavior of polychlorinated biphenyls (PCBs) onto polystyrene, polyethylene, and polyethylene terephthalate microplastics of varying sizes in marine water/sediment systems. Results showed that polymer type and particle size influenced PCB binding capacity, with microplastics acting as potential vectors for transferring persistent organic pollutants to marine biota through the food chain.