干旱区生态环境知识资源中心(Arid): Microplastic abundance and distribution in a Central Asian desert

Arid

DOI	10.1016/j.scitotenv.2021.149529
	Microplastic abundance and distribution in a Central Asian desert
	Wang, Feng; Lai, Zhongping; Peng, Guyu; Luo, Lan; Liu, Kai; Huang, Xianmei; Xu, Yantian; Shen, Qinjing; Li, Daoji
通讯作者	Lai, ZP (corresponding author), Shantou Univ, Inst Marine Sci, Guangdong Prov Key Lab Marine Biotechnol, Shantou 515063, Peoples R China.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	800
英文摘要	Microplastic pollution is widespread, affecting even the remotest places on Earth. However, observational data on microplastic deposition in deserts, which comprise 21% of the total land area, are relatively rare. The current study aims to address the knowledge gap in terms of microplastic distribution in Asian deserts. The Badain Jaran Desert in Central Asia is the second largest desert in China. We investigated microplastic distribution and deposition on dunes and lakes of this desert. Microplastics were extracted from surface sediments to determine their characteristics and polymer types by microscopic inspection and mu-FTIR. The abundance of microplastics (detection limit is approximately 40 mu m) in the uninhabited area ranged from 0.7 +/- 1.5 to 11.7 +/- 15.5 items/ kg, with an average of 6.0 +/- 15.4 items/kg. Fragments and fibers accounted for 77% and 23% of the total microplastics, respectively. Epoxy resin (28%), polyethylene terephthalate (25%), phenoxy resin (25%), and poly amide (9%) were the main polymer components, whose sizes were concentrated at 50-200 mu m. Back-trajectory modeling was then performed to explore the possible source direction of the microplastics. The results showed that the microplastics mainly originated from the populated areas southeast of the desert, indicating longdistance atmospheric transport and deposition in deserts. The desert-edge zone with some tourism activity contained more microplastics (8.2 +/- 17.9 items/kg) than the non-tourism zone (0.9 +/- 1.6 items/kg), indicating a potential contribution from tourism. The abundance in the non-tourism zone (0.9 items/kg) can be used as a reference for microplastic background values in the Central Asian deserts, as this value is critical for simulating and predicting global microplastic yields. (c) 2021 Elsevier B.V. All rights reserved.
英文关键词	Badain Jaran Desert Microplastics Deposition and distribution Source-to-sink process Asian background value
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000704002900004
WOS关键词	LAKE-ONTARIO ; SEDIMENTS ; ACCUMULATION ; POLLUTION ; PLASTICS ; SEA
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	北京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364595
作者单位	[Wang, Feng; Lai, Zhongping; Huang, Xianmei; Xu, Yantian; Shen, Qinjing] Shantou Univ, Inst Marine Sci, Guangdong Prov Key Lab Marine Biotechnol, Shantou 515063, Peoples R China; [Peng, Guyu] Peking Univ, Coll Environm Sci & Engn, Key Lab Water & Sediment Sci, Minist Educ, Beijing 100871, Peoples R China; [Luo, Lan] Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA; [Liu, Kai; Li, Daoji] East China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 200241, Peoples R China
推荐引用方式 GB/T 7714	Wang, Feng,Lai, Zhongping,Peng, Guyu,et al. Microplastic abundance and distribution in a Central Asian desert[J]. 北京大学,2021,800.
APA	Wang, Feng.,Lai, Zhongping.,Peng, Guyu.,Luo, Lan.,Liu, Kai.,...&Li, Daoji.(2021).Microplastic abundance and distribution in a Central Asian desert.SCIENCE OF THE TOTAL ENVIRONMENT,800.
MLA	Wang, Feng,et al."Microplastic abundance and distribution in a Central Asian desert".SCIENCE OF THE TOTAL ENVIRONMENT 800(2021).