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An Occupant-Based Overview of Microplastics in Indoor Environments in the City of Surabaya, Indonesia
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Airborne microplastic deposition in settled indoor dust was measured in residential and commercial buildings in a city environment, providing an occupant-based assessment of indoor microplastic exposure. Microplastics smaller than 5 mm were deposited at measurable rates in all sampled indoor settings, with fiber shapes dominating the settled dust contamination.
Airborne microplastics smaller than 5 mm in diameter can be easily inhaled by humans, impacting their health. The human exposure to microplastics can occur in indoor environments, and this study investigated the degree of indoor deposition of microplastics in settled dust. The authors assessed the relationship between the number of occupants/people and the amount of microplastics in their indoor environment by determining the indoor microplastic exposure in two offices, two schools, and two apartments in Surabaya, Indonesia. The settled dust was collected using a vacuum cleaner for 10 minutes on a single weekday and the weekend at each study location. The results show that the amount of microplastics collected at each location during workdays exceeded the amount found on weekends. The two offices sampled were found to have the greatest amounts of microplastics (334 particles on a weekday, 242 particles on a weekend; and 351 particles on a weekday, 252 particles on a weekend), and the two apartments produced the least amounts of microplastics (133 particles on a weekday, 127 particles on a weekend; and 108 particles on a weekday, 95 particles on a weekend). The dominant microplastic shape was that of fiber, and the dominant size range of the microplastics collected was 3000-3500 m. The amount of indoor microplastics is influenced by the activities and the number of occupants/people in the space. The exposure levels indicated here will contribute to the formulation of the environmental health policy recommendations.
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Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.