The distribution and morphology of microplastics in coastal soils adjacent to the Bohai Sea and the Yellow Sea

doi:10.1016/j.geoderma.2018.02.015

YIC-IR > 中国科学院海岸带环境过程与生态修复重点实验室 > 海岸带环境过程实验室

	The distribution and morphology of microplastics in coastal soils adjacent to the Bohai Sea and the Yellow Sea
	Zhou Q; Zhang HB; Fu CC; Zhou Y; Dai ZF; Li Y; Tu C; Luo YM
发表期刊	Geoderma
ISSN	0016-7061
	2018
卷号	322 页码:201-208
关键词	Microplastics Coastal soils Shape types Abundance Spatial distribution Surface morphology
研究领域	Agriculture
DOI	10.1016/j.geoderma.2018.02.015
产权排序	1
作者部门	海岸带环境过程实验室
英文摘要	Microplastics (< 5 mm) are considered to be emerging pollutants of global concern. Investigations on microplastics pollution in coastal and marine environments have increased recently but knowledge gaps still exist regarding microplastics in coastal beach soils with high-intensity human activities. In the present study a total of 120 soil samples were taken from 53 sites along > 3000 km of coastline in Shandong province, east China, adjacent to both the Bohai Sea and the Yellow Sea coastlines under different land use management. Microplastics were separated from the soil samples using a continuous flow and floating separation apparatus. The shape type, size, abundance, spatial distribution, polymer composition and surface morphology of the microplastics were identified by a range of advanced microscopic and micro-analytical methods. The analytical results show that seven shape types, namely foams, pellets, fragments, flakes, fibers, films and sponges, were present in the beach soils. The polymer composition of the microplastics included polyethylene, polypropylene, polystyrene, poly-ether urethane and a polymer blend of both polyethylene and polypropylene. Approximately 60% of the observed microplastics had a size range < 1 mm. Microplastic abundance varied greatly among the soils, ranging from 1.3 to 14,712.5 N kg(-1) (dry weight) as influenced by high-intensity human activities such as mariculture, tourism, and port construction. The seven shape types of microplastics from the coastal environment had different weathering surface morphologies, showing scratches, creases, micropores, cracks, either concave or convex, and of various shapes and sizes, possibly due to physical friction, photochemical oxidation and/or animal attack. Algae or crude oil was observed on the surface of some microplastics. The weathered surfaces of microplastics might act as a high-capacity carrier with adhering microorganisms and chemicals. Further studies are required on the weathering processes, sorption capacity and transport of microplastics especially in smaller size (< 1 mm) under coastal conditions.
文章类型	Article
收录类别	SCI
语种	英语
关键词[WOS]	SMALL PLASTIC DEBRIS ; MARINE-ENVIRONMENT ; SOUTH-KOREA ; DENSITY POLYETHYLENE ; PACIFIC-OCEAN ; CHINA ; BEACHES ; POLLUTION ; PELLETS ; CONTAMINATION
研究领域[WOS]	Soil Science
WOS记录号	WOS:000430777000020
引用统计	被引频次：379[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/24142
专题	中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室海岸带生物学与生物资源利用重点实验室_海岸带生物学与生物资源保护实验室中国科学院海岸带环境过程与生态修复重点实验室
通讯作者	Luo YM
推荐引用方式 GB/T 7714	Zhou Q,Zhang HB,Fu CC,et al. The distribution and morphology of microplastics in coastal soils adjacent to the Bohai Sea and the Yellow Sea[J]. Geoderma,2018,322:201-208.
APA	Zhou Q.,Zhang HB.,Fu CC.,Zhou Y.,Dai ZF.,...&Luo YM.(2018).The distribution and morphology of microplastics in coastal soils adjacent to the Bohai Sea and the Yellow Sea.Geoderma,322,201-208.
MLA	Zhou Q,et al."The distribution and morphology of microplastics in coastal soils adjacent to the Bohai Sea and the Yellow Sea".Geoderma 322(2018):201-208.