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Size-Resolved Airborne Micro- and Nanoplastics in Beijing: Comparative Analysis of Heating and Non-Heating Seasons
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Researchers conducted the first size-resolved, multi-method assessment of airborne micro- and nanoplastics in Beijing, finding that inhalation exposure nearly triples during the heating season (374–926 ng/day vs. 60–344 ng/day), with polyethylene dominating all size fractions and coal combustion the likely seasonal driver.
during the heating season, with polyethylene (PE) dominating all size fractions (>50%). Complementary vibrational spectroscopy results confirmed the presence of additional polymers, including polyamide (PA) and poly(methyl methacrylate) (PMMA), highlighting the value of multimethod approaches for comprehensive characterization and the ongoing need to develop new analytical techniques. Exposure assessment indicated daily per capita inhalation of outdoor MNPs in urban Beijing at 60-344 ng during the non-heating season and 374-926 ng during the heating season. This study provides the first size-resolved, multimethod assessment of airborne MNPs in a northern Chinese megacity, with a comparative analysis between heating and non-heating seasons.
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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.