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Microplastics from road markings: the loss of drop-on glass beads as a signal of emissions
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Microplastics from road markings: the loss of drop-on glass beads as a signal of emissions
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Researchers investigated microplastic emissions from road marking abrasion under controlled laboratory conditions, finding that glass beads applied to road marking surfaces play a protective role that reduces MP loss in field conditions, with results quantifying drop-on bead loss as a signal of emission rates.
Microplastics and road markings: the role of glass beads and loss estimation
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Field and laboratory assessment of road marking wear found that retroreflectivity failures cause markings to be renewed before plastic-bearing paint layers are significantly abraded, resulting in microplastic emissions of only 0.1 to 4.3 g/person/year at most locations -- far below previously reported estimates.
Environmental transport and sorting of glass retroreflective microbeads and their potential as proxies for road marking paints
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Researchers analyzed the concentration, sorting, and transport of glass retroreflective microbeads used in road marking paints across environmental samples, testing their potential as proxies for road paint microplastic emissions. Retroreflective microbeads were found in environmental samples and showed transport patterns consistent with being road-marking-derived, providing a novel tracer for this undercharacterized source of road-associated microplastic pollution.
Microplastics from road markings in the presence of tyre wear – a laboratory test method development
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Researchers developed an analytical procedure combining a temperature gradient method and ICP-OES to distinguish road marking wear from tyre wear particles, validating it on a wear simulator and finding that glass beads in road markings act protectively, delaying microplastic release, and that emissions vary enormously across different road marking materials.
Microplastics from road markings in the presence of tyre wear – a laboratory test method development
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Researchers developed an analytical procedure combining a temperature gradient method and ICP-OES to distinguish road marking wear from tyre wear particles, validating it on a wear simulator and finding that glass beads in road markings act protectively, delaying microplastic release, and that emissions vary enormously across different road marking materials.
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