气候变化领域集成服务门户(CCPortal): Sinking velocity of sub-millimeter microplastic

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DOI	10.1016/j.marpolbul.2018.12.035
	Sinking velocity of sub-millimeter microplastic
	Kaiser D.; Estelmann A.; Kowalski N.; Glockzin M.; Waniek J.J.
发表日期	2019
ISSN	0025326X
起始页码	214
结束页码	220
卷号	139
英文摘要	Sinking experiments were conducted using irregularly shaped polyamide (PA), polymethyl methacrylate (PMMA), and polyethylene terephthalate (PET) particles sized 6 to 251 μm. Certified PS spheres were used to validate experiments and showed that the effect of particle size on terminal sinking velocity is well reproduced by the method. As expected sinking velocities of irregularly shaped particles were considerably lower than theoretical values for spheres of the same size range calculated via several approximations available in the literature. Despite the influence of particle shape, the dependence of terminal sinking velocity on particle size can reasonably well be described by a quadratic linear regression, with an average determination of 63%. To generalize results we present a model that predicts terminal sinking velocity as a function of particle size and particle excess density over the fluid. Improving the predictive power of this model requires further experiments with a range of particle characteristics. © 2018 Elsevier Ltd
英文关键词	Microplastic; Settling experiments; Shadowgraphy; Sub-mm particle size; Terminal sinking velocity
语种	英语
scopus关键词	Microplastic; Plastic bottles; Polymethyl methacrylates; Velocity; Irregularly shaped particles; Particle characteristics; Particle shape; Polyethylene terephthalates (PET); Predictive power; Shadowgraphy; Sinking velocity; Theoretical values; Particle size; microplastic; plastic; poly(methyl methacrylate); polyamide; polyethylene terephthalate; unclassified drug; plastic; sea water; marine pollution; particle settling; particle size; plastic; pollution monitoring; settling velocity; Article; controlled study; density; environmental parameters; linear regression analysis; particle size; terminal sinking velocity; velocity; chemistry; environmental monitoring; procedures; surface property; theoretical model; water pollutant; Environmental Monitoring; Models, Theoretical; Particle Size; Plastics; Seawater; Surface Properties; Water Pollutants, Chemical
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/150150
作者单位	Leibniz Institute for Baltic Sea Research Warnemünde, Seestraße 15, Rostock, 18119, Germany
推荐引用方式 GB/T 7714	Kaiser D.,Estelmann A.,Kowalski N.,et al. Sinking velocity of sub-millimeter microplastic[J],2019,139.
APA	Kaiser D.,Estelmann A.,Kowalski N.,Glockzin M.,&Waniek J.J..(2019).Sinking velocity of sub-millimeter microplastic.Marine Pollution Bulletin,139.
MLA	Kaiser D.,et al."Sinking velocity of sub-millimeter microplastic".Marine Pollution Bulletin 139(2019).