干旱区生态环境知识资源中心(Arid): Dry and wet deposition of microplastics in a semi-arid region (Shiraz, Iran)

Arid

DOI	10.1016/j.scitotenv.2021.147358
	Dry and wet deposition of microplastics in a semi-arid region (Shiraz, Iran)
	Abbasi, Sajjad; Turner, Andrew
通讯作者	Abbasi, S (corresponding author), Shiraz Univ, Coll Sci, Dept Earth Sci, Shiraz 71454, Iran.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	786
英文摘要	Microplastics (MP) have been retrieved from settled dusts and rainfall collected monthly over a period of a year and daily over an additional period of ten days in the city of Shiraz and at an elevated remote site (Mount Derak) in Iran. Total monthly deposition ranged from about 1000 to 3500 MP m(-2) at Shiraz and about 200 to 600 MP m(-2) at Mount Derak, with greater deposition taking place during the dry months (June to November) than in months when precipitation events occurred. Overall, MP deposition was dominated by dry deposition, with precipitation appearing to washout MP and inhibit local resuspension of material by dampening the ground. The majority of MP in dust and precipitation (>99%) was of a fibrous nature, with the finest particles measured (<100 um in length) comprising similar to 20-40% of MP at Shiraz and similar to 70-80% of MP at Mount Derak and analysis of selected samples (n = 34) revealing the most abundant polymers to be polypropylene, polyethylene polystyrene and polyethylene terephthalate. While in Shiraz, local sources of MP are likely significant, the occurrence of MP at Mount Derak and back trajectories computed with HYSPLIT suggest that distal sources, mainly carried by air masses from the north and west, are also important. The observations here add to the growing evidence of the global ubiquity and long-range transport of MP in the atmosphere and reinforce calls for more research into the potential impacts of MP in this environmental compartment. (C) 2021 Elsevier B.V. All rights reserved.
英文关键词	Miaoplastics Fibres Dust Precipitation Deposition Atmosphere Flux Iran
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000660250700008
WOS关键词	MARINE-ENVIRONMENT ; FIBERS
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/2XILL650/351682
作者单位	[Abbasi, Sajjad] Shiraz Univ, Coll Sci, Dept Earth Sci, Shiraz 71454, Iran; [Turner, Andrew] Plymouth Univ, Sch Geog Earth & Environm Sci, Plymouth PL4 8AA, Devon, England
推荐引用方式 GB/T 7714	Abbasi, Sajjad,Turner, Andrew. Dry and wet deposition of microplastics in a semi-arid region (Shiraz, Iran)[J],2021,786.
APA	Abbasi, Sajjad,&Turner, Andrew.(2021).Dry and wet deposition of microplastics in a semi-arid region (Shiraz, Iran).SCIENCE OF THE TOTAL ENVIRONMENT,786.
MLA	Abbasi, Sajjad,et al."Dry and wet deposition of microplastics in a semi-arid region (Shiraz, Iran)".SCIENCE OF THE TOTAL ENVIRONMENT 786(2021).