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Study Reveals Adults Breathe in 68,000 Indoor Microplastic Particles Daily

Scientists are calling for targeted health-impact studies to address uncertainty about deep-lung penetration by microplastic particles

Forscher haben berechnet, wie viele winzige Plastikteilchen sich beim Atmen in unseren Körpern ansammeln könnten. Besonders stark belastet: Innenräume wie Autos und Wohnungen.
Eine Plastiktüte treibt im Wasser (Symbolbild).
Eine Computergrafik zeigt die Bewegung und Ablagerung von Mikroplastik im Blutkreislauf
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Overview

  • Adults inhale an estimated 68,000 microplastic particles daily in indoor environments; children inhale about 47,000 particles per day.
  • Air sampling in private homes averaged 528 particles per cubic meter of air and reached 2,238 particles per cubic meter inside cars, with 94 percent of particles measuring between 1 and 10 micrometers.
  • Most particles originate from abrasion of textiles, plastic furniture and vehicle interiors, with compositions dominated by polyethylene and polyamide.
  • Exposure estimates were derived from indoor air measurements combined with standard resting breathing volumes rather than direct detection in human tissue.
  • Health effects of inhaled microplastics remain largely unresearched and lack regulatory benchmarks, prompting experts to urge systematic toxicological and epidemiological investigations.