干旱区生态环境知识资源中心(Arid): Transport of polystyrene nanoplastics in natural soils: Effect of soil properties, ionic strength and cation type

Arid

DOI	10.1016/j.scitotenv.2019.136065
	Transport of polystyrene nanoplastics in natural soils: Effect of soil properties, ionic strength and cation type
	Wu, Xiaoli 1; Lyu, Xueyan 1,2; Li, Zhengyu 1; Gao, Bin 3; Zeng, Xiankui 1; Wu, Jichun 1; Sun, Yuanyuan 1
通讯作者	Sun, Yuanyuan
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2020
卷号	707
英文摘要	Nanoplastics as emerging pollutants have caused growing concerns and posed potential threats to the environment. Nonetheless, only few studies investigated transport behaviors of nanoplastics in natural soils. In this study, column experiments were conducted to investigate the effect of soil properties, ionic strength and cation type on the transport of polystyrene nanoplastics (PSNPs) in a desert soil (DS), a black soil (BS) and a red soil (RS). The effluent recovery of PSNPs in three soils followed the order of DS (0%-96.8%) > BS (0%-87.5%) > RS (0%). The retention of PSNPs was positively correlated with Fe/Al oxides contents (DS: Fe-2.69%, Al-12.6%; BS: Fe-4.04%, Al-15.9%; RS: Fe-6.57%, Al-26.9%), whereas negatively correlated with soil pH (DS: 9.75; BS: 6.57; RS: 4.97). Soil minerals and pH were thus identified as the crucial soil properties determining transport of PSNPs, due to their coupled effects on surface charges to affect electrostatic interactions between soils and PSNPs. In addition, increasing solution ionic strength strongly inhibited the transport of PSNPs in the DS (0%-96.8%) and BS (0%-87.5%). Ca2+ (IS: 1-5 mM) was more pronounced in enhancing PSNP retention than Na+ (IS: 1-20 mM). Our findings highlight that the transport and fate of PSNPs in natural soils are highly sensitive to soil physicochemical properties, ionic strength and cation type, and reveal that nanoplastics have strong mobility ability in soils with high pH and low Fe/Al oxides contents, which may pose potential risks to the soil and groundwater environment. (C) 2019 Elsevier B.V. All rights reserved.
英文关键词	Nanoplastics Transport Retention Soils Minerals pH
类型	Article
语种	英语
国家	Peoples R China ; USA
收录类别	SCI-E
WOS记录号	WOS:000507925700142
WOS关键词	AGGREGATION KINETICS ; DEPENDENT TRANSPORT ; ORGANIC-MATTER ; POROUS-MEDIA ; HUMIC-ACID ; NANOPARTICLES ; MICROPLASTICS ; SAND ; DEPOSITION ; ENVIRONMENT
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	南京大学 ; 南京信息工程大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315502
作者单位	1.Nanjing Univ, State Key Lab Pollut Control & Resource Reuse, Key Lab Surficial Geochem, Minist Educ,Sch Earth Sci & Engn,Hydrosci Dept, Nanjing 210023, Peoples R China; 2.Nanjing Univ Informat Sci & Technol, Sch Hydrol & Water Resources, Nanjing 210044, Peoples R China; 3.Univ Florida, Dept Agr & Biol Engn, Gainesville, FL 32611 USA
推荐引用方式 GB/T 7714	Wu, Xiaoli,Lyu, Xueyan,Li, Zhengyu,et al. Transport of polystyrene nanoplastics in natural soils: Effect of soil properties, ionic strength and cation type[J]. 南京大学, 南京信息工程大学,2020,707.
APA	Wu, Xiaoli.,Lyu, Xueyan.,Li, Zhengyu.,Gao, Bin.,Zeng, Xiankui.,...&Sun, Yuanyuan.(2020).Transport of polystyrene nanoplastics in natural soils: Effect of soil properties, ionic strength and cation type.SCIENCE OF THE TOTAL ENVIRONMENT,707.
MLA	Wu, Xiaoli,et al."Transport of polystyrene nanoplastics in natural soils: Effect of soil properties, ionic strength and cation type".SCIENCE OF THE TOTAL ENVIRONMENT 707(2020).