Compositions and distributions of microplastic in Korean beaches

Title
Compositions and distributions of microplastic in Korean beaches
Author(s)
송영경; 장미; 한기명; 홍상희; 심원준
KIOST Author(s)
Song, Young Kyoung(송영경)Jang, Mi(장미)Han, Gi Myung(한기명)Hong, Sang Hee(홍상희)Shim, Won Joon(심원준)
Publication Year
2014-10-23
Abstract
The Ccomposition and distribution of microplastics in six beaches along Korean coast and six beaches of Geoje Island which affected by riverine discharge from nearby Nakdong River were determined in April -and May, 2013 and in May, 2012 respectively. OIn the beaches, ten quadrats (0.5 m x 0.5 m) were randomly placed along the high-stranded line and 1L sand passed through a 1 mm sieve was collected. In the laboratory, 50 mLl sand from each 1L sample of ten quadrats was sub-sampled to make a composite sample (500 ml) representing each beach. The microplastics were separated with sediment using saturated NaCl solution. Supernatant was filtered through a 0.2 μm filter paper and plastic like particles on the filter papers were identified with a FT-IR microscope. The abundance of microplastics from twelve beaches was in the range of 32-9,280 particle/L-sediment. The mean abundance of microplastics from six beaches of Geoje (2,689 particles/L-sediment) was 17 times higher than those in the others beaches (157 particles/L-sediment). The beaches in the East coast of Geoje Island were severely contaminated by microplastics. Among the five categories of microplastics (fragment, fiber, spherule, sheet and expanded polystyrene (EPS)), fragment type accounted for the highest portion (69-100%) in the 9 beaches, while in Gangneung, the highest portion was fiber (50%) and in Guyoung and Wahyun was EPS (63% and 90%). In composition,pectively. OIn the beaches, ten quadrats (0.5 m x 0.5 m) were randomly placed along the high-stranded line and 1L sand passed through a 1 mm sieve was collected. In the laboratory, 50 mLl sand from each 1L sample of ten quadrats was sub-sampled to make a composite sample (500 ml) representing each beach. The microplastics were separated with sediment using saturated NaCl solution. Supernatant was filtered through a 0.2 μm filter paper and plastic like particles on the filter papers were identified with a FT-IR microscope. The abundance of microplastics from twelve beaches was in the range of 32-9,280 particle/L-sediment. The mean abundance of microplastics from six beaches of Geoje (2,689 particles/L-sediment) was 17 times higher than those in the others beaches (157 particles/L-sediment). The beaches in the East coast of Geoje Island were severely contaminated by microplastics. Among the five categories of microplastics (fragment, fiber, spherule, sheet and expanded polystyrene (EPS)), fragment type accounted for the highest portion (69-100%) in the 9 beaches, while in Gangneung, the highest portion was fiber (50%) and in Guyoung and Wahyun was EPS (63% and 90%). In composition,
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/25932
Bibliographic Citation
PICES 2014 Annual Meeting, pp.100, 2014
Publisher
North Pacific Marine Science Organization
Type
Conference
Language
English
Publisher
North Pacific Marine Science Organization
Related Researcher
Research Interests

Microplastic pollution,Persistent Organic Pollutants,Oil Pollution,미세플라스틱 오염,잔류성 유기오염물질,유류오염

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