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Article ? AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button. Tier 2 ? Original research — experimental, observational, or case-control study. Direct primary evidence. Detection Methods Environmental Sources Marine & Wildlife Remediation Sign in to save

Distribution and characterization of microplastics in marine sediments from coastal and offshore in South Korea

Zenodo (CERN European Organization for Nuclear Research) 2024 Score: 45 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Won Joon Shim, Youna Cho, Youna Cho, Youna Cho, Youna Cho, Gi Myung Han Gi Myung Han Youna Cho, Gi Myung Han Sang Hee Hong, Won Joon Shim, Youna Cho, Sung Yong Ha, Sang Hee Hong, Sang Hee Hong, Sung Yong Ha, Won Joon Shim, Mi Jang, Sung Yong Ha, Won Joon Shim, Sung Yong Ha, Sung Yong Ha, 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, Sung Yong Ha, Sung Yong Ha, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Youna Cho, Gi Myung Han Sung Yong Ha, Sung Yong Ha, Sang Hee Hong, Sung Yong Ha, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Hayoung 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, Mi Jang, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Youna Cho, Gi Myung Han Gi Myung Han Gi Myung Han Youna Cho, Gi Myung Han Sung Yong Ha, Gi Myung Han Youna Cho, Sung Yong Ha, Sang Hee Hong, Sung Yong Ha, Sang Hee Hong, Gi Myung Han Sang Hee Hong, Sang Hee Hong, Youna Cho, Gi Myung Han Sang Hee Hong, Won Joon Shim, Gi Myung Han Gi Myung Han Youna Cho, Youna Cho, Youna Cho, Youna Cho, Sung Yong Ha, Sang Hee Hong, Youna Cho, Sang Hee Hong, Sang Hee Hong, Gi Myung Han Sang Hee Hong, Sung Yong Ha, Dayeong Jeong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sung Yong Ha, Sang Hee Hong, Dayeong Jeong, Dayeong Jeong, Mi Jang, Dayeong Jeong, Gi Myung Han Sang Hee Hong, Gi Myung Han Gi Myung Han Gi Myung Han Gi Myung Han Sang Hee Hong, Gi Myung Han Gi Myung Han Gi Myung Han Gi Myung Han Gi Myung Han Gi Myung Han Sang Hee Hong, Gi Myung Han Sang Hee Hong, Gi Myung Han Sang Hee Hong, Gi Myung Han Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Won Joon Shim, Sang Hee Hong, Sang Hee Hong, Sung Yong Ha, Youna Cho, Sang Hee Hong, Won Joon Shim, Won Joon Shim, Won Joon Shim, Won Joon Shim, Won Joon Shim, Gi Myung Han Won Joon Shim, Won Joon Shim, Gi Myung Han Gi Myung Han Gi Myung Han Gi Myung Han Gi Myung Han Gi Myung Han Sung Yong Ha, Sung Yong Ha, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Dayeong Jeong, Dayeong Jeong, Hayoung Cho, Hayoung Cho, Won Joon Shim, Won Joon Shim, Won Joon Shim, Won Joon Shim, Won Joon Shim, Dayeong Jeong, Dayeong Jeong, Mi Jang, Mi Jang, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sang Hee Hong, Sung Yong Ha, Sung Yong Ha, Mi Jang, Sung Yong Ha, Sung Yong Ha, Hayoung Cho, Sang Hee Hong, Gi Myung Han Mi Jang, Youna Cho, Sang Hee Hong, Sang Hee Hong, Hayoung Cho, Sang Hee Hong, Mi Jang, Won Joon Shim, Won Joon Shim, Mi Jang, Sang Hee Hong, Won Joon Shim, Mi Jang, Won Joon Shim, Sung Yong Ha, Mi Jang, 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, Gi Myung Han Sang Hee Hong, Gi Myung Han Won Joon Shim, Youna Cho, Won Joon Shim, Won Joon Shim, Youna Cho, Won Joon Shim, Gi Myung Han Gi Myung Han

Summary

Researchers conducted an intensive survey of microplastic distribution and characterization in marine sediments from coastal areas, confirming the seafloor as a long-term sink for plastic pollution. Contamination was highest near urban coastlines, with fibers and fragments accumulating preferentially in low-energy depositional environments.

Polymers
PE PET PP PS
Study Type Environmental

The seafloor is considered the ultimate repository for microplastics in the environment. Sediment can accumulate microplastics over extended periods due to low degradation rates under poor light and oxygen-deficient conditions. We conducted an intensive assessment survey to determine the levels, distribution profiles, and contamination characteristics of microplastic in the seafloor of coastal and offshore areas. The study focused on a coastal bay (Masan Bay) and an offshore area (East Sea). Surface sediment samples were collected using Van Veen Grab and box core samplers in Masan Bay (n=27) and the East Sea (n=47) from 2022 to 2023. Microplastics were detected in all sediment samples collected from Masan Bay and the East Sea, with concentrations ranges of 3,189-75,375 n/kg and 892-43,209 n/kg, respectively. The overall microplastic abundance was higher in the coastal bay compared to the offshore area, with a negative gradient in microplastic concentration observed from inside to outside of the bay. Among the various polymers, polyethylene, polypropylene, polyester, and polyethylene terephthalate exhibited concentration gradients. These results indicates that land-based human activities are a significant source of microplastic in the marine environment. Fragment-type microplastics were predominant in both the coastal bay and offshore area, while fibers were relatively more abundant in the coastal bay. Low-density polymers such as polyethylene, polypropylene, and polyethylene vinyl acetate were relatively abundant in the coastal region, while high-density small microplastics were more prevalent in the offshore area. Exceptionally high microplastic abundances were found at a dumping site and its surrounding areas, with spherical polystyrene being particularly abundant. Also see: https://micro2024.sciencesconf.org/559369/document

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