干旱区生态环境知识资源中心(Arid): Atmospheric transport of microplastics during a dust storm

Arid

DOI	10.1016/j.chemosphere.2021.133456
	Atmospheric transport of microplastics during a dust storm
	Abbasi, Sajjad; Rezaei, Mahrooz; Ahmadi, Farnaz; Turner, Andrew
通讯作者	Abbasi, S
来源期刊	CHEMOSPHERE
ISSN	0045-6535
EISSN	1879-1298
出版年	2022
卷号	292
英文摘要	Dust storms are common events in arid and semi-arid regions that have a wide range of impacts on the environment and human health. This study addresses the presence, characteristics and potential sources of microplastics (MPs) in such events by analysing MPs deposited with dust particles in the metropolis of Shiraz, southwest Iran, following an intense storm in May 2018. At 22 locations throughout the city, MP concentrations on a number basis ranged from 0.04 to 1.06 per g of dust (median = 0.31 MP g-1). Particles were mainly fibrous, with a mean diameter of about 20 mu m and >60% under 100 mu m in length, and polymer makeup was dominated by nylon, polypropylene and polyethylene terephthalate. Examination of selected MPs by scanning electron microscopy revealed varying degrees of weathering and contamination by extraneous geogenic particles amongst the samples. Using published MP concentrations in urban dusts and remote, arid soils, we estimate that between about 0.1 and 5% of MPs deposited by the dust storm are derived from local sources within the metropolis, with the remainder arising from more distant sources. HYSPLIT modelling, satellite imagery and published geochemical signatures of regional dust particles suggest that the deserts of Saudi Arabia constitute the principal distal and transboundary source. Dust storms may represent a significant means by which MPs are transported and redistributed in arid and semi-arid environments and an important source of MPs to the oceans.
英文关键词	Microfibres Weathering Deposition Source Flux Iran
类型	Article
语种	英语
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000758283700008
WOS关键词	EVENTS ; IMPACT
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376192
推荐引用方式 GB/T 7714	Abbasi, Sajjad,Rezaei, Mahrooz,Ahmadi, Farnaz,et al. Atmospheric transport of microplastics during a dust storm[J],2022,292.
APA	Abbasi, Sajjad,Rezaei, Mahrooz,Ahmadi, Farnaz,&Turner, Andrew.(2022).Atmospheric transport of microplastics during a dust storm.CHEMOSPHERE,292.
MLA	Abbasi, Sajjad,et al."Atmospheric transport of microplastics during a dust storm".CHEMOSPHERE 292(2022).