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Paint fragments as polluting microplastics: A brief review
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This brief review synthesized current knowledge on paint fragments as a significant but frequently overlooked source of microplastic pollution in the ocean. Paint particles contain diverse polymers including polyurethanes, polyesters, and epoxies, and are often excluded from microplastic audits despite their prevalence in marine environments.
Paint particles are part of the increasingly important microplastics (MPs) pollution of our oceans. They contain polyurethanes, polyesters, polyacrylates, polystyrenes, alkyls and epoxies. In spite of their prevalence, paint fragments are often excluded from MP audits. This review, citing 127 references, discusses detection, characteristics, sources and ecological effects of paint fragments in our oceans, as well as the abundance of paint fragments in MP samples around the world and their colonization by marine microorganisms, which differs from that of non-paint MPs. Paint MPs arise from shipping and boating activities, road markings and external surfaces of buildings. Many paint fragments come from antifouling paints used on commercial vessels and leisure boats; these may be regarded as particular pollutants, not only containing but also leaching heavy metals and biocides. Some effects of antifouling paint particles on aquatic biota are caused by these toxins. Paint particles are an understudied portion of marine MP pollution.
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Researchers highlight that paint particles, which consist of polymers combined with additives, are frequently overlooked or misclassified in studies of marine microplastic pollution. They found that paint fragments from ships, buildings, and infrastructure represent a significant but underreported source of microplastic contamination in ocean environments. The study calls for paint particles to be consistently included in marine debris monitoring to provide a more accurate picture of plastic pollution.
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This review highlights paint particles as an overlooked but significant source of microplastic pollution in water environments, originating from marine vessels, buildings, and industrial activities. Paint particles carry toxic chemicals including heavy metals and biocides that can leach into water and accumulate in marine organisms, posing risks to both ecosystems and human health through seafood consumption.
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Paint chips and coatings are a major, often overlooked source of tiny plastic particles (microplastics) that wash into our air, water, and soil as they weather and break down over time. This matters because these particles can end up in the food and water we consume, and scientists are still working to understand the health effects of ongoing microplastic exposure. This paper reviews existing research on how paint pollution happens and explores ways to reduce it, such as better product design and disposal practices.
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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.