气候变化领域集成服务门户(CCPortal): The role of coated fertilizer used in paddy fields as a source of microplastics in the marine environment

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DOI	10.1016/j.marpolbul.2020.111727
	The role of coated fertilizer used in paddy fields as a source of microplastics in the marine environment
	Katsumi N.; Kusube T.; Nagao S.; Okochi H.
发表日期	2020
ISSN	0025326X
卷号	161
英文摘要	Fixed-point and multi-point field survey was conducted to determine the actual contamination of the Japanese coast by microcapsules derived from coated fertilizers. The results indicated that the amount of microcapsules increased during the irrigation season (9423–74,869 pieces/m2) and decreased in the non-irrigation season (77–1471 pieces/m2). Microcapsules accounted for 90% of all microplastics sampled during the irrigation season. The lack of correlation between the area of agricultural land in the watershed and the microcapsule density on the coast suggested that the density of microcapsules on the coast was not only dependent on the total load to the ocean, but also on topographic and meteorological conditions. More than 90% of the microcapsules collected from the shoreline were made of polyethylene. Scanning electron microscopic observation of the surface of the microcapsules revealed that portions of the microcapsules were removed as secondary microplastics in the process of migration to the ocean. © 2020 Elsevier Ltd
英文关键词	Coated fertilizer; Microcapsules; Microplastics; Paddy fields
语种	英语
scopus关键词	Agricultural robots; Fertilizers; Irrigation; Microplastic; Agricultural land; Field surveys; Fixed points; Marine environment; Meteorological condition; Microcapsules; Microplastics; Scanning electron microscopic; Microstructure; coated fertilizer; fertilizer; microplastic; polyethylene; unclassified drug; coastal zone; fertilizer; irrigation; marine pollution; paddy field; plastic; pollutant source; pollutant transport; scanning electron microscopy; agricultural land; Article; coating (procedure); controlled study; correlation analysis; density; irrigation (agriculture); marine environment; meteorological phenomena; microcapsule; microplastic pollution; nonhuman; paddy field; scanning electron microscopy; surface area; topography; water contamination; watershed
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/148486
作者单位	Faculty of Bioresources and Environmental Sciences, Ishikawa Prefectural University, 1-308 Suematsu, Nonoichi, Ishikawa 921-8836, Japan; Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, 1-308 Suematsu, Nonoichi, Ishikawa 921-8836, Japan; Low Level Radioactivity Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, 24, O, Wake, Nomi, Ishikawa 920-1192, Japan; School of Creative Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo, 169-8555, Japan
推荐引用方式 GB/T 7714	Katsumi N.,Kusube T.,Nagao S.,et al. The role of coated fertilizer used in paddy fields as a source of microplastics in the marine environment[J],2020,161.
APA	Katsumi N.,Kusube T.,Nagao S.,&Okochi H..(2020).The role of coated fertilizer used in paddy fields as a source of microplastics in the marine environment.Marine Pollution Bulletin,161.
MLA	Katsumi N.,et al."The role of coated fertilizer used in paddy fields as a source of microplastics in the marine environment".Marine Pollution Bulletin 161(2020).