干旱区生态环境知识资源中心(Arid): Occurrence, sources, and relationships of soil microplastics with adsorbed heavy metals in the Ebinur Lake Basin, Northwest China

Arid

DOI	10.1007/s40333-022-0025-9
	Occurrence, sources, and relationships of soil microplastics with adsorbed heavy metals in the Ebinur Lake Basin, Northwest China
	Zhang Zhaoyong; Guo Jieyi; Wang Pengwei
通讯作者	Zhang, ZY
来源期刊	JOURNAL OF ARID LAND
ISSN	1674-6767
EISSN	2194-7783
出版年	2022
卷号	14 期号:8 页码:910-924
英文摘要	There is a lack of research on soil microplastics in arid oases considering the rapid economic development of northwestern China. Here, we studied the occurrence and sources of microplastics in soil, as well as the relationships between microplastics and adsorbed heavy metals in the Ebinur Lake Basin, a typical arid oasis in China. Results showed that (1) the average microplastic content in all soil samples was 36.15 (+/- 3.27) mg/kg. The contents of microplastics at different sampling sites ranged from 3.89 (+/- 1.64) to 89.25 (+/- 2.98) mg/kg. Overall, the proportions of various microplastic shapes decreased in the following order: film (54.25%)>fiber (18.56%)>particle (15.07%)>fragment (8.66%)>foam (3.46%); (2) among all microplastic particles, white particles accounted for the largest proportion (52.93%), followed by green (24.15%), black (12.17%), transparent (7.16%), and yellow particles (3.59%). The proportions of microplastic particle size ranges across all soil samples decreased in the following order: 1000-2000 mu m (40.88%)>500-1000 mu m (26.75%)>2000-5000 mu m (12.30%)>100-500 mu m (12.92%)>0-100 mu m (7.15%). FTIR (Fourier transform infrared) analyses showed that polyethylene terephthalate (PET), polypropylene (PP), polycarbonate (PC), polyethylene (PE), and polystyrene (PS) occurred in the studied soil; (3) random forest predictions showed that industrial and agricultural production activities and the discharge of domestic plastic waste were related to soil microplastic pollution, in which agricultural plastic film was the most important factor in soil pollution in the study area; and (4) seven heavy metals extracted from microplastics in the soil samples showed significant positive correlations with soil pH, EC, total salt, N, P, and K contents (P<0.01), indicating that these soil factors could significantly affect the contents of heavy metals carried by soil microplastics. This research demonstrated that the contents of soil microplastics are lower than other areas of the world, and they mainly come from industrial and agricultural activities of the Ebinur Lake Basin.
英文关键词	occurrence characteristics source analysis soil microplastics heavy metals Ebinur Lake Basin
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000840090100006
WOS关键词	RANDOM FOREST ; POLLUTION ; SEDIMENTS ; CLASSIFICATION ; ECOSYSTEM ; SHANGHAI ; PLASTICS ; SYSTEM ; CARBON ; RIVER
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/2XILL650/393328
推荐引用方式 GB/T 7714	Zhang Zhaoyong,Guo Jieyi,Wang Pengwei. Occurrence, sources, and relationships of soil microplastics with adsorbed heavy metals in the Ebinur Lake Basin, Northwest China[J],2022,14(8):910-924.
APA	Zhang Zhaoyong,Guo Jieyi,&Wang Pengwei.(2022).Occurrence, sources, and relationships of soil microplastics with adsorbed heavy metals in the Ebinur Lake Basin, Northwest China.JOURNAL OF ARID LAND,14(8),910-924.
MLA	Zhang Zhaoyong,et al."Occurrence, sources, and relationships of soil microplastics with adsorbed heavy metals in the Ebinur Lake Basin, Northwest China".JOURNAL OF ARID LAND 14.8(2022):910-924.