Polymer types and additive concentrations in single-use plastic products collected from Indonesia, Japan, Myanmar, and Thailand

Tun, Thant Zin; Nurlatifah,; Htwe, Aung Than; Than, Ni Ni; Khine, Myint Myint; Chavanich, Suchana; Viyakarn, Voranop; Isobe, Atsuhiko; Nakata, Haruhiko

doi:10.1016/j.scitotenv.2023.163983

“…Concerns about plastic debris and MPs are linked to exposure to chemicals contained as plastic additives. Tun et al, (2023) suggested that single-use plastic product PE and PP bags collected form Myanmar contained high amount of plastics additives concentrations. Plastic debris collected from the beach contained benzotriazole UV stabilizer and brominated flame retardants (Tanaka et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Microplastics distribution in sediments collected from Myanmar

Tun

¹

,

Mon

²

,

Nakata

³

2023

Preprint

0

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Microplastics (MPs) distributions have been increasingly reported in the terrestrial areas worldwide but a little information is available for ASEAN regions. In this study, 68 sediment samples of drainage channels, lakes, rivers and beach from Myanmar were collected between 2014 and 2018, and analyzed to investigate the status of MPs concentration and prevalence. The high concentrations of MPs in sediments were found in urban cities called Yangon (13,855 pieces/kg dry weight), Mandalay (11,946 pieces/kg), and Pathein (12,583 pieces/kg), which were two orders of magnitude greater than the MPs concentrations in sediments collected in rural towns called Wundwin. These results suggested that difference in high population densities and high municipal solid waste generation rate are related to the MPs contamination in sediments. Polyethylene, polypropylene and polyethylene terephthalate with fragments, lines/fibers and films/sheets were major polymers and shape in the sediment samples analyzed from Myanmar. To our knowledges, this is the first study to report the distribution of MPs in sediments from Myanmar.

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Microplastics Distribution in Sediments Collected from Myanmar

Tun,

Mon,

Nakata

2023

Arch Environ Contam Toxicol

0

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Microplastics (MPs) distributions have been increasingly reported in the terrestrial areas worldwide but a little information is available for ASEAN regions. In this study, 68 sediment samples of drainage channels, lakes, rivers and beach from Myanmar were collected between 2014 and 2018, and analyzed to investigate the status of MPs concentration and prevalence. The high concentrations of MPs in sediments were found in urban cities called Yangon (13,855 pieces/kg dry weight), Mandalay (11,946 pieces/kg), and Pathein (12,583 pieces/kg), which were two orders of magnitude greater than the MPs concentrations in sediments collected in rural towns called Wundwin. These results suggested that difference in high population densities and high municipal solid waste generation rate are related to the MPs contamination in sediments. Polyethylene, polypropylene and polyethylene terephthalate with fragments, lines/fibers and films/sheets were major polymers and shape in the sediment samples analyzed from Myanmar. To our knowledges, this is the first study to report the distribution of MPs in sediments from Myanmar.

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