Article
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Tier 2
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Original research — experimental, observational, or case-control study. Direct primary evidence.
Marine & Wildlife
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Water Research2022
37 citations
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Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Score: 40
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0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Young Kyoung Song,
Soeun Eo,
Soeun Eo,
Soeun Eo,
Soeun Eo,
Gi Myung Han,
Gi Myung Han,
Young Kyoung Song,
Young Kyoung Song,
Young Kyoung Song,
Young Kyoung Song,
Soeun Eo,
Soeun Eo,
Young Kyoung Song,
Soeun Eo,
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,
Seongbong Seo,
Seongbong Seo,
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‐Gyu Park,
Sang Hee Hong,
Gi Myung Han,
Won Joon Shim
Sang Hee Hong,
Won Joon Shim
Won Joon Shim
Sang Hee Hong,
Won Joon Shim
Won Joon Shim
Won Joon Shim
Won Joon Shim
Won Joon Shim
Won Joon Shim
Won Joon Shim
Sang Hee Hong,
Won Joon Shim
Won Joon Shim
Sang Hee Hong,
Soeun Eo,
Won Joon Shim
Sang Hee Hong,
Young Kyoung Song,
Won Joon Shim
Soeun Eo,
Sang Hee Hong,
Sang Hee Hong,
Sang Hee Hong,
Sang Hee Hong,
Sang Hee Hong,
Sang Hee Hong,
Won Joon Shim
Sang Hee Hong,
Sang Hee Hong,
Young‐Gyu Park,
Young‐Gyu Park,
Won Joon Shim
Won Joon Shim
Sang Hee Hong,
Young‐Gyu Park,
Sang Hee Hong,
Sang Hee Hong,
Sang Hee Hong,
Young‐Gyu Park,
Young‐Gyu Park,
Young Kyoung Song,
Sang Hee Hong,
Won Joon Shim
Sang Hee Hong,
Sang Hee Hong,
Won Joon Shim
Sang Hee Hong,
Sang Hee Hong,
Seongbong Seo,
Won Joon Shim
Won Joon Shim
Gi Myung Han,
Won Joon Shim
Sang Hee Hong,
Sang Hee Hong,
Sang Hee Hong,
Won Joon Shim
Sang Hee Hong,
Sang Hee Hong,
Sang Hee Hong,
Gi Myung Han,
Sang Hee Hong,
Gi Myung Han,
Gi Myung Han,
Sang Hee Hong,
Gi Myung Han,
Gi Myung Han,
Gi Myung Han,
Gi Myung Han,
Gi Myung Han,
Sang Hee Hong,
Sang Hee Hong,
Gi Myung Han,
Sang Hee Hong,
Sang Hee Hong,
Sang Hee Hong,
Soeun Eo,
Soeun Eo,
Soeun Eo,
Soeun Eo,
Soeun Eo,
Soeun Eo,
Soeun Eo,
Soeun Eo,
Soeun Eo,
Soeun Eo,
Soeun Eo,
Soeun Eo,
Soeun Eo,
Soeun Eo,
Soeun Eo,
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
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,
Sang Hee Hong,
Gi Myung Han,
Gi Myung Han,
Young Kyoung Song,
Gi Myung Han,
Gi Myung Han,
Won Joon Shim
Young‐Gyu Park,
Young Kyoung Song,
Gi Myung Han,
Won Joon Shim
Won Joon Shim
Sang Hee Hong,
Sang Hee Hong,
Won Joon Shim
Sang Hee Hong,
Gi Myung Han,
Gi Myung Han,
Sang Hee Hong,
Sang Hee Hong,
Gi Myung Han,
Gi Myung Han,
Sang Hee Hong,
Won Joon Shim
Gi Myung Han,
Won Joon Shim
Gi Myung Han,
Won Joon Shim
Soeun Eo,
Gi Myung Han,
Gi Myung Han,
Young Kyoung Song,
Sang Hee Hong,
Young Kyoung Song,
Gi Myung Han,
Sang Hee Hong,
Sang Hee Hong,
Sang Hee Hong,
Sang Hee Hong,
Sang Hee Hong,
Sang Hee Hong,
Sang Hee Hong,
Sang Hee Hong,
Young Kyoung Song,
Sang Hee Hong,
Young Kyoung Song,
Young Kyoung Song,
Won Joon Shim
Gi Myung Han,
Sang Hee Hong,
Won Joon Shim
Won Joon Shim
Sang Hee Hong,
Won Joon Shim
Won Joon Shim
Won Joon Shim
Won Joon Shim
Won Joon Shim
Won Joon Shim
Young‐Gyu Park,
Young‐Gyu Park,
Young Kyoung Song,
Young Kyoung Song,
Gi Myung Han,
Gi Myung Han,
Gi Myung Han,
Gi Myung Han,
Sang Hee Hong,
Young Kyoung Song,
Gi Myung Han,
Sang Hee Hong,
Young Kyoung Song,
Young Kyoung Song,
Gi Myung Han,
Gi Myung Han,
Sang Hee Hong,
Seongbong Seo,
Seongbong Seo,
Young Kyoung Song,
Young Kyoung Song,
Young Kyoung Song,
Won Joon Shim
Won Joon Shim
Won Joon Shim
Gi Myung Han,
Sang Hee Hong,
Won Joon Shim
Sang Hee Hong,
Sang Hee Hong,
Sang Hee Hong,
Young‐Gyu Park,
Won Joon Shim
Sang Hee Hong,
Sang Hee Hong,
Won Joon Shim
Won Joon Shim
Won Joon Shim
Sang Hee Hong,
Sang Hee Hong,
Won Joon Shim
Sang Hee Hong,
Won Joon Shim
Sang Hee Hong,
Sang Hee Hong,
Won Joon Shim
Won Joon Shim
Won Joon Shim
Sang Hee Hong,
Sang Hee Hong,
Gi Myung Han,
Sang Hee Hong,
Sang Hee Hong,
Sang Hee Hong,
Won Joon Shim
Sang Hee Hong,
Gi Myung Han,
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
Researchers found that historical ocean dumping sites in the Yellow and East Seas of South Korea contain microplastic concentrations up to 14 times higher than surrounding areas, with the East Sea dumping site reaching nearly 60,000 particles/kg in surface sediments, revealing these sites as hidden microplastic hotspots.
Three ocean dumping sites located in the Yellow Sea (YS) and East Sea (ES) of South Korea have accumulated terrestrial waste from 1988 to 2015. Most of this waste comprised industrial wastewater and sewage sludge, which are sources of microplastics. In this study, we investigated the spatiotemporal distribution and characteristics of microplastics in surface and core sediments of the YS, South Sea (SS) and ES, including at dumping sites (YDP and EDP). The mean abundance of microplastics in surface sediments was ranked in order of EDP (59,457 ± 49,130 particles/kg d.w.), ES (5,047 ± 9,404 particles/kg d.w.), YDP (3,965 ± 3,213 particles/kg d.w.), SS (314 ± 488 particles/kg d.w.) and YS (288 ± 400 particles/kg d.w.). EDP and YDP showed about 14- and 12-fold higher microplastic abundances, and more diverse polymer compositions, than the ES and YS, respectively. The historical trend of microplastic pollution in age-dated core sediments from EDP and YDP aligned well with the amount of historical ocean dumping. As the level of ocean dumping has gradually reduced since 2006, and was finally banned in 2015, the microplastic abundance decreased accordingly. Interestingly, spherical polystyrene (PS) primary microplastic was the dominant type in EDP sediments (78%) and other surface sediments in the ES (52%). More than 60 million tons of sewage and wastewater sludge were dumped at EDP, and extremely high abundances of up to 130,000 particles/kg d.w. were observed in EDP surface sediments. PS primary microplastics were continuously present in the EDP and ES sediment cores in the dumping period and are suspected to have originated from industrial wastewater sludge. The particle transportation model results showed that PS was dispersed throughout the ES during ocean dumping. In addition, deep circulation can contribute to the dispersion of particles after sinking. These results indicate that ocean dumping sites represent an underwater hotspot and source of microplastics in seafloor sediments.