Assessment of microplastic contamination on beaches in South Korea

Title
Assessment of microplastic contamination on beaches in South Korea
Author(s)
송영경; 홍상희; 장미; 한기명; Manviri Rani; 심원준
KIOST Author(s)
Song, Young Kyoung(송영경)Hong, Sang Hee(홍상희)Jang, Mi(장미)Han, Gi Myung(한기명)Shim, Won Joon(심원준)
Publication Year
2015-05-05
Abstract
The composition and distribution of microplastics in twelve beaches along Korean coast and six beaches of Geoje Island affected by riverine discharge from nearby Nakdong River were determined in 2012 and 2013-2014 respectively. On 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 mL sand from each 1L 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 1.2 μm filter paper and plastic like particles on the filter papers were identified with a FT-IR microscope. The abundance of microplastics from eighteen beaches was in the range of 12-9,280 particle/L-sediment. The mean abundance of microplastics (< 1mm) from six beaches of Geoje (2,721 particles/L-sediment) was significantly (p<0.05) higher than those in others beaches (213 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 (50-100%) in the 12 beaches, while in Gangneung, the highest portion was fiber (50%) and in 5 beaches were EPS (49-100%). In polymer composition, polypropylene, es, 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 mL sand from each 1L 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 1.2 μm filter paper and plastic like particles on the filter papers were identified with a FT-IR microscope. The abundance of microplastics from eighteen beaches was in the range of 12-9,280 particle/L-sediment. The mean abundance of microplastics (< 1mm) from six beaches of Geoje (2,721 particles/L-sediment) was significantly (p<0.05) higher than those in others beaches (213 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 (50-100%) in the 12 beaches, while in Gangneung, the highest portion was fiber (50%) and in 5 beaches were EPS (49-100%). In polymer composition, polypropylene,
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/25591
Bibliographic Citation
Society of Environmental Toxicology & Chemistry (SETAC), pp.TU061, 2015
Publisher
Society
Type
Conference
Language
English
Publisher
Society
Related Researcher
Research Interests

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

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