Microplastic as an emerging contaminant in marine environment

Title
Microplastic as an emerging contaminant in marine environment
Author(s)
심원준; 송영경; 홍상희; 장미; 한기명; MANVIRI
KIOST Author(s)
Shim, Won Joon(심원준)Song, Young Kyoung(송영경)Hong, Sang Hee(홍상희)Jang, Mi(장미)Han, Gi Myung(한기명)
Publication Year
2014-06-30
Abstract
Pieces of plastic debris introduced into the environment at a size of less than 1 or 5 mm are categorized as ‘microplastics.’ Microplastics are divided into primary (manufactured at small sizes) and secondary (large plastics broken into small pieces) plastics. Various marine invertebrates and vertebrated have been reported to uptake microplastics as sea. Upon ingestion of microplastics, the pollutants absorbed on and (or) used as additives in the plastic can be transferred to the marine organisms. Abundance of microplastics stranded on sand beaches and floating in sea surfaces southern coast of Korea was relatively high in the world. Various synthetic polymers were identified using a FT-IR microscope including polyethylene, polypropylene, expanded polystyrene (styrofoam), alkyd, polymeric silicone and so on, Fragments and fiber are dominant microplastic types. Styrofoam spherules contain high concentration of HBCDs up to ppm level as flame retardant additive. They easily leaches out from styrofoam spherules in sea water. HBCDs from styrofoam buoy in study area is high enough to contaminate surrounding water, sediment and biota. Further fragmentation of styrofoam spherules were tested with a laboratory accelerated mechanical abrasion simulating beach environments for a month. Forty styrofoam spherules were further fragmented to total 5.15x105/bottle, and 85% of the fragmented particles were in size range of 1-25 μmmall pieces) plastics. Various marine invertebrates and vertebrated have been reported to uptake microplastics as sea. Upon ingestion of microplastics, the pollutants absorbed on and (or) used as additives in the plastic can be transferred to the marine organisms. Abundance of microplastics stranded on sand beaches and floating in sea surfaces southern coast of Korea was relatively high in the world. Various synthetic polymers were identified using a FT-IR microscope including polyethylene, polypropylene, expanded polystyrene (styrofoam), alkyd, polymeric silicone and so on, Fragments and fiber are dominant microplastic types. Styrofoam spherules contain high concentration of HBCDs up to ppm level as flame retardant additive. They easily leaches out from styrofoam spherules in sea water. HBCDs from styrofoam buoy in study area is high enough to contaminate surrounding water, sediment and biota. Further fragmentation of styrofoam spherules were tested with a laboratory accelerated mechanical abrasion simulating beach environments for a month. Forty styrofoam spherules were further fragmented to total 5.15x105/bottle, and 85% of the fragmented particles were in size range of 1-25 μm
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/26110
Bibliographic Citation
환경독성보건학회 2014 춘계 학술대회, pp.287, 2014
Publisher
환경독성보건학회
Type
Conference
Language
English
Publisher
환경독성보건학회
Related Researcher
Research Interests

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

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