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Microplastics in Antarctica - a Plastic Legacy in the Antarctic Snow?
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This study detected microplastics in snow from remote Antarctic locations including the South Pole, Union Glacier, and Schanz Glacier, finding concentrations of 73-3,099 MP/L with 95% of particles smaller than 50 micrometers. Refined automated FTIR analysis revealed that previous Antarctic microplastic reports likely underestimated contamination due to analytical size limitations.
Abstract Microplastic pollution in remote inland Antarctica is largely unknown. This study explored the plastic footprint of snow from remote Antarctic camps; Union Glacier, Schanz Glacier and the South Pole. Refined automated FTIR techniques enabled interrogation of <25 µm microplastics and fibres in Antarctic snow for the first time. Microplastics were pervasive (73 - 3,099 MP L-1). The majority (95%) measured <50 µm, indicating that previous microplastic reports in Antarctica may be underestimated, due to analytical restrictions. Polymer composition and concentration did not vary significantly between sites, with dominant polymers being polyamide (PA), polyethylene terephthalate (PET), polyethylene (PE) and synthetic rubbers, likely from both local (clothing, ropes, flags) and long-range (aerially deposited) sources. Results indicate that even in the most remote regions of earth, humans are leaving a plastic legacy in the snow, and illustrate the importance of remote, cryospheric regions as critical study sites for determining temporal fluxes in microplastic pollution.
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Microplastics in Antarctica - A plastic legacy in the Antarctic snow?
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Microplastics were found in snow from some of the most remote places on Earth, including Union Glacier and the South Pole in Antarctica. Using advanced detection methods capable of identifying particles as small as 11 micrometers, researchers found that 95% of the microplastics were smaller than 50 micrometers, suggesting previous studies in Antarctica likely underestimated contamination levels. The dominant plastic types -- polyamide, PET, and polyethylene -- point to a global atmospheric transport of plastic pollution.
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Researchers analyzed the composition and abundance of microplastics in snow samples from Antarctica, the Pyrenees, and urban Europe, finding particles at all sites including the most remote. Polyester fibers were universal, reinforcing the role of long-range atmospheric transport.
First evidence of microplastics in Antarctic snow
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Researchers collected snow samples from 19 sites across the Ross Island region of Antarctica and found microplastics in every sample, at an average concentration of 29 particles per liter. Fibers were the most common particle type, with polyethylene terephthalate (PET) identified as the predominant polymer. This study provides the first evidence that airborne microplastics have reached Antarctic snow, demonstrating the truly global extent of microplastic pollution.
Characterization of Small Micro-and Nanoparticles in Antarctic Snow by Electron Microscopy and Raman Micro-Spectroscopy
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Researchers used electron microscopy and Raman spectroscopy to characterize small micro- and nanoparticles in Antarctic snow, assessing the extent of anthropogenic contamination reaching this remote region. The study found particles attributable to both long-range atmospheric transport and local sources, including plastic-derived materials.
Microplastic in snow from European and Arctic sites
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Microplastics and fibers were found in snow from Arctic sea ice, Svalbard, Helgoland, Bavaria, and the Swiss Alps — identified by FTIR imaging — with Arctic concentrations significantly lower than European snow but still substantial. The study demonstrates atmospheric long-range transport of microplastics, including rubber and varnish particles, to remote environments far from pollution sources.
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