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Spatial distribution and historical trend of microplastic pollution in sediments from enclosed bays of South Korea

2023 Score: 30 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Soeun Eo, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Youna Cho, Youna Cho, Youna Cho, Youna Cho, Gi Myung Han, Gi Myung Han, Gi Myung Han, Youna Cho, Youna Cho, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Youna Cho, Won Joon Shim Won Joon Shim Won Joon Shim Won Joon Shim Won Joon Shim Won Joon Shim Soeun Eo, Soeun Eo, Soeun Eo, Soeun Eo, Soeun Eo, Soeun Eo, Won Joon Shim Sang Hee Hong, Gi Myung Han, Youna Cho, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Soeun Eo, Soeun Eo, Won Joon Shim Won Joon Shim Won Joon Shim Won Joon Shim Won Joon Shim Won Joon Shim Won Joon Shim Won Joon Shim Won Joon Shim Won Joon Shim Won Joon Shim Won Joon Shim Won Joon Shim Won Joon Shim Won Joon Shim Won Joon Shim Young Kyoung Song, Young Kyoung Song, Won Joon Shim Won Joon Shim Gi Myung Han, Won Joon Shim Gi Myung Han, Youna Cho, Gi Myung Han, Youna Cho, Won Joon Shim Sang Hee Hong, Won Joon Shim Young Kyoung Song, Won Joon Shim Gi Myung Han, Young Kyoung Song, Young Kyoung Song, Sang Hee Hong, Gi Myung Han, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Young Kyoung Song, Sang Hee Hong, Sang Hee Hong, Gi Myung Han, Sang Hee Hong, Gi Myung Han, Young Kyoung Song, Sang Hee Hong, Soeun Eo, Gi Myung Han, Young Kyoung Song, Soeun Eo, Young Kyoung Song, Young Kyoung Song, Sang Hee Hong, Soeun Eo, Soeun Eo, Won Joon Shim Soeun Eo, Soeun Eo, Soeun Eo, Soeun Eo, Soeun Eo, Soeun Eo, Soeun Eo, Soeun Eo, Soeun Eo, Won Joon Shim Youna Cho, Soeun Eo, Youna Cho, Soeun Eo, Soeun Eo, Youna Cho, Soeun Eo, Sang Hee Hong, Youna Cho, Gi Myung Han, Sang Hee Hong, Sang Hee Hong, Young Kyoung Song, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Soeun Eo, Won Joon Shim Won Joon Shim Won Joon Shim Won Joon Shim Won Joon Shim Won Joon Shim Won Joon Shim Gi Myung Han, Young Kyoung Song, Won Joon Shim Gi Myung Han, Gi Myung Han, Gi Myung Han, Young Kyoung Song, Gi Myung Han, Youna Cho, Youna Cho, Young Kyoung Song, Gi Myung Han, Gi Myung Han, Gi Myung Han, Young Kyoung Song, Youna Cho, Youna Cho, Gi Myung Han, Sang Hee Hong, Sang Hee Hong, Gi Myung Han, Gi Myung Han, Young Kyoung Song, Sang Hee Hong, Gi Myung Han, Gi Myung Han, Sang Hee Hong, Sang Hee Hong, Young Kyoung Song, Gi Myung Han, Sang Hee Hong, Young Kyoung Song, Sang Hee Hong, Gi Myung Han, Sang Hee Hong, Won Joon Shim Sang Hee Hong, Won Joon Shim Young Kyoung Song, Young Kyoung Song, Gi Myung Han, Gi Myung Han, Won Joon Shim Gi Myung Han, Young Kyoung Song, Sang Hee Hong, Young Kyoung Song, Young Kyoung Song, Sang Hee Hong, Won Joon Shim Won Joon Shim Gi Myung Han, Won Joon Shim Won Joon Shim Won Joon Shim Gi Myung Han, Won Joon Shim Gi Myung Han, Young Kyoung Song, Sang Hee Hong, Young Kyoung Song, Won Joon Shim Gi Myung Han, Young Kyoung Song, Won Joon Shim Won Joon Shim Won Joon Shim Sang Hee Hong, Sang Hee Hong, Youna Cho, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Gi Myung Han, Won Joon Shim Sang Hee Hong, Won Joon Shim Sang Hee Hong, Won Joon Shim Won Joon Shim Sang Hee Hong, Won Joon Shim Sang Hee Hong, Sang Hee Hong, Won Joon Shim Sang Hee Hong, Sang Hee Hong, Won Joon Shim Won Joon Shim Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Gi Myung Han, Won Joon Shim Sang Hee Hong, Gi Myung Han, Youna Cho, Youna Cho, Gi Myung Han, Won Joon Shim Gi Myung Han, Won Joon Shim Won Joon Shim Won Joon Shim Won Joon Shim Won Joon Shim Won Joon Shim Young Kyoung Song, Young Kyoung Song, Won Joon Shim

Summary

This study analyzed sediment cores from enclosed bays in South Korea to reconstruct the historical trend of microplastic pollution. Plastic levels increased sharply from the 1990s onward, mirroring the rise in global plastic production and providing a long-term record of contamination in coastal sediments.

Polymers
PA PP PS
Study Type Environmental

Seafloor sediment is an important sink for microplastics, and vertical profile of microplastic accumulation in a sediment core can provide historical pollution trend. However, microplastic pollution in coastal sediment has not been addressed well, and a few studies have investigated the trends of microplastic pollution in age-dated core sediments. In this study, the microplastics in surface sediments in urban, aquafarm and reference areas of South Korea were analyzed to evaluate the pollution characteristics of microplastic according to different sea area use patterns. In addition, the historical trend of microplastic pollution was investigated in core sediments in the urban and aquafarm areas. The abundance of microplastics in surface sediment were in order of urban area (6,887 ± 6,100 particles/kg d.w.), aquafarm area (5,121 ± 2,428 particles/kg d.w.), and reference area (2,474 ± 522 particles/kg d.w.). Polymer types were diverse in the urban area, and expanded polystyrene used for buoys was dominant in the aquafarm area. Fragment type microplastic was dominant in all three areas, and the proportion of fiber was higher in urban and aquafarm areas than in reference area. The polymer composition of fiber was different in urban (polyester 51% and polypropylene (PP) 29%) and aquafarm areas (PP 84% and polyamide 13%). These results support that the characteristics of microplastic pollution well reflect the sea area use patterns. Historical trend of microplastic pollution has increased since the 1980s and the increasing rate steeply increased around the early and mid-2000s in both the core samples. Their increasing trend reflected the influence of population or surrounding input sources (i.e. effluent discharge amount of a wastewater treatment plant). The clear increasing trend of historical microplastic pollution up to now indicates that more efforts is highly required to reduce the microplastic pollution. 

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