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Using a citizen science approach to assess nanoplastics pollution in remote high-altitude glaciers
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Using trained mountaineers to collect glacier samples and a high-sensitivity detection method, researchers found nanoplastic pollution at concentrations of 2 to 80 nanograms per liter in remote high-altitude glaciers. The presence of common plastics like polyethylene, polypropylene, and tire wear particles at these isolated locations confirms that nanoplastics travel through the atmosphere and contaminate even Earth's most remote environments.
Nanoplastics are suspected to pollute every environment on Earth, including very remote areas reached via atmospheric transport. We approached the challenge of measuring environmental nanoplastics by combining high-sensitivity TD-PTR-MS (thermal desorption-proton transfer reaction-mass spectrometry) with trained mountaineers sampling high-altitude glaciers ("citizen science"). Particles < 1 μm were analysed for common polymers (polyethylene, polyethylene terephthalate, polypropylene, polyvinyl chloride, polystyrene and tire wear particles), revealing nanoplastic concentrations ranging 2-80 ng mL- 1 at five of 14 sites. The dominant polymer types found in this study were tire wear, polystyrene and polyethylene particles (41%, 28% and 12%, respectively). Lagrangian dispersion modelling was used to reconstruct possible sources of micro- and nanoplastic emissions for those observations, which appear to lie largely to the west of the Alps. France, Spain and Switzerland have the highest contributions to the modelled emissions. The citizen science approach was found to be feasible providing strict quality control measures are in place, and is an effective way to be able to collect data from remote and inaccessible regions across the world.
More Papers Like This
Using a Citizen Science Approach to Assess Nanoplastics Pollution in Remote High-Altitude Glaciers
AI summary Read the abstract
Citizen scientists collected samples from remote high-altitude glaciers and researchers analyzed them for nanoplastics, finding nanoplastic particles even in these pristine environments and demonstrating that citizen science can extend the spatial reach of nanoplastic pollution monitoring.
Using a citizen science approach to assess nanoplastics pollution in remote high-altitude glaciers
AI summary Read the abstract
Researchers combined high-sensitivity TD-PTR-MS (thermal desorption-proton transfer reaction-mass spectrometry) with citizen science sampling by trained mountaineers to measure nanoplastic concentrations at 14 high-altitude glacier sites in the Alps, detecting nanoplastics at concentrations of 2-80 ng/mL at 5 of 14 sites. FLEXPART trajectory modelling identified probable emission sources lying largely to the west in France, Spain, and Switzerland, with tire wear particles, polystyrene, and polyethylene as the dominant polymer types.
Chemical Analysis of Organic Aerosol Particles and Nanoplastics Deposited on Alpine Glaciers
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Researchers collected samples from alpine glaciers and detected nanoplastic particles alongside organic aerosols, finding that glaciers act as depositories for atmospheric plastic contamination. Nanoplastics were present even in these remote, high-altitude environments far from industrial sources. The findings contribute to understanding long-range atmospheric transport of plastic pollution to pristine environments.
Nanoplastic detection and quantification in high-altitude glacial snow samples from Italy, Switzerland and France
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Scientists found tiny plastic particles (nanoplastics) in snow from remote, high-altitude glaciers in the Alps, places you'd expect to be pristine and untouched by pollution. This shows that plastic pollution has spread through the air to even the most isolated corners of the planet, meaning there's likely no escaping some level of exposure, whether you're drinking meltwater-fed streams or just breathing air that carries these particles.
Microplastics in glaciers of the Tibetan Plateau: Evidence for the long-range transport of microplastics
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Researchers discovered microplastics in glaciers on the Tibetan Plateau, one of the most remote regions on Earth. The presence of plastic particles at such high altitudes and far from population centers provides strong evidence that microplastics can travel long distances through the atmosphere, making this a truly global pollution problem.
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