Separation and size characterization of zinc oxide nanoparticles in environmental waters using asymmetrical flow field-flow fractionation

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	Separation and size characterization of zinc oxide nanoparticles in environmental waters using asymmetrical flow field-flow fractionation
	Amde, Meseret 1,3; Tan, Zhi-Qiang ; Liu, Jingfu
刊名	TALANTA
	2019-08-01
卷号	200 页码:357-365
关键词	Zinc oxide nanoparticles Size characterization UV-vis Asymmetrical flow field-flow fractionation Environmental waters
ISSN号	0039-9140
英文摘要	There are few studies on separation and size characterization of zinc oxide nanoparticles (ZnO-NPs), which have wide applications in several science and technology areas, in the environment. In this work, we report a method for the separation and size characterization of ZnO-NPs by asymmetrical flow field-flow fractionation (AF4) coupled to UV-vis detector. Experimental conditions such as composition of the carrier solution, focus time, crossflow, detector flow rate and injection volume were systematically studied in terms of NPs separation, recovery, and repeatability. Size characterization was achieved using polystyrene nanoparticles as a size standard and a mixture of < 35 nm (NP-A) and < 100 nm (NP-B) ZnO-NPs were separated and size characterized posterior preconcentration using ultracentrifugation. The method was also employed to characterize the size of homemade ZnO-NPs, and the results were in concordance with dynamic light scattering (DLS) analysis and thus, the method can be used as an alternate method. Upon application on environmental water samples, the two ZnO-NPs, NP-A and NP-B, have been separated and size characterized. The estimated hydrodynamic sizes of the NP-A and NP-B were found to be in the range of 83-97 nm and 188-202 nm, respectively, with good precision (RSD, < 11%), suggesting that the current method can satisfactorily separate and generate information about sizes of the NPs in samples with a complex matrix. Therefore, the developed technique can be used as a baseline to investigate size related environmental processes of the NPs in environmental water samples.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/42587]
专题	生态环境研究中心_环境化学与生态毒理学国家重点实验室
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Haramaya Univ, Coll Nat & Computat Sci, Dept Chem, POB 138, Dire Dawa, Ethiopia 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, POB 2871, Beijing 100085, Peoples R China
推荐引用方式 GB/T 7714	Amde, Meseret,Tan, Zhi-Qiang,Liu, Jingfu. Separation and size characterization of zinc oxide nanoparticles in environmental waters using asymmetrical flow field-flow fractionation[J]. TALANTA,2019,200:357-365.
APA	Amde, Meseret,Tan, Zhi-Qiang,&Liu, Jingfu.(2019).Separation and size characterization of zinc oxide nanoparticles in environmental waters using asymmetrical flow field-flow fractionation.TALANTA,200,357-365.
MLA	Amde, Meseret,et al."Separation and size characterization of zinc oxide nanoparticles in environmental waters using asymmetrical flow field-flow fractionation".TALANTA 200(2019):357-365.