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The deposition of atmospheric microplastics in Jakarta-Indonesia: The coastal urban area
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Researchers characterized atmospheric microplastic deposition in Jakarta, Indonesia over 12 months, finding deposition rates of 3-40 particles per square meter per day with fibers as the dominant shape, and higher deposition during the rainy season compared to the dry season.
The air pollution in Jakarta has been recorded regularly; meanwhile, the information of atmospheric microplastics is still unknown. This study examines the characteristics (shape, size, and polymer) and deposition rate of atmospheric microplastics in Jakarta. The sample was obtained by putting a rain gauge for 12 months. All microplastic samples were analyzed for polymer using FT-IR. The lowest to the highest percentage of atmospheric microplastic based on shape were foam<fragment<fiber, meanwhile based on size were of 500-1000 μm < 300-500 μm. The detected polymers included polyester, polystyrene, polybutadiene, and polyethylene. The microplastics deposition rate ranged from 3 to 40 particles md, with an average of 15 particles md. The rainy season's deposition rate (23.422 particles md) was higher than the dry season (5.745 particles md). Our study proves that the atmospheric microplastic exists in Jakarta's air and needs to be considered to monitor by the government regularly.
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A year-long monitoring study of atmospheric microplastic fallout in a Southeast Asian megacity found deposition rates of 71–917 items/m²/day dominated by fibers, with no significant correlation with rainfall or wind — contrary to patterns seen in temperate climate studies.
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Researchers collected precipitation samples in a Chinese coastal city and found microplastics of multiple shapes deposited from the atmosphere, with seasonal variation in deposition rates. This is one of the first studies to document atmospheric microplastic deposition in a coastal urban environment.
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Researchers characterized atmospheric microplastic deposition in Shanghai during the rainy season, finding that rainfall events significantly increased deposition rates, with fibers dominating and sources linked to both local urban activities and long-range atmospheric transport.
Characteristics of Airborne Microplastic Polymers Using Passive Sampling and the Influence of Meteorological Conditions
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Researchers used passive air sampling over 28 days near an Indonesian industrial estate and found microplastic fiber concentrations highest downwind in residential zones, with polyvinyl chloride, polycarbonate, and polyamide as dominant polymers, and wind speed as the primary meteorological driver of abundance.
Microplastic deposition flux and morphology in atmospheric fallouts of Ho Chi Minh City (Vietnam) sampled from June 2018 until June 2019
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Researchers measured the deposition flux and morphology of atmospheric microplastics in dry and wet fallout samples collected monthly over one year at three sites in Ho Chi Minh City, Vietnam. They found consistent atmospheric microplastic deposition across all sites, with fibers and fragments being the most common types. The study provides one of the first quantitative atmospheric microplastic datasets for a major Southeast Asian megacity.
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.