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The deposition of atmospheric microplastics in Jakarta-Indonesia: The coastal urban area

Marine Pollution Bulletin 2021 128 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Anna Ida Sunaryo Purwiyanto, Tri Prartono, Etty Riani, Yuli Naulita, Muhammad Reza Cordova, Alan F. Koropitan

Summary

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.

Polymers

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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