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Systematic review of microplastics and nanoplastics in indoor and outdoor air: identifying a framework and data needs for quantifying human inhalation exposures
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This systematic review is the first to examine microplastic levels in both indoor and outdoor air and estimate how much people inhale. The findings suggest we are breathing in microplastic particles daily, with indoor air often containing higher concentrations due to synthetic textiles and household materials.
This study is the first known systematic review of inhalational MP exposure from indoor and outdoor air. It also provides inhalational exposures calculated from previously published environmental samples of MPs as well as from toxicology studies.
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First overview of microplastics in indoor and outdoor air
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This study provided one of the first comprehensive overviews of microplastic contamination in both indoor and outdoor air, establishing that microplastics are airborne and that indoor environments may have higher concentrations than outdoors due to synthetic materials and textiles. The findings raised new concerns about inhalation as a pathway for human microplastic exposure.
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This systematic review compared microplastic levels in indoor and outdoor air around the world. Indoor air often contains more microplastics than outdoor air — largely from synthetic clothing and household items — meaning our homes and workplaces may be significant sources of daily microplastic exposure.
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