Elemental Mass Size Distribution for Characterization, Quantification and Identification of Trace Nanoparticles in Serum and Environmental Waters

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

	Elemental Mass Size Distribution for Characterization, Quantification and Identification of Trace Nanoparticles in Serum and Environmental Waters
	Liu, Jing-fu; Zhou, Xiao-xia; Jiang, Gui-bin
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY
	2017-08-01
卷号	51 期号:7 页码:3892-3901
英文摘要	Accurate characterization, quantification, and identification of nanoparticles (NPs) are essential to fully understand the environmental processes and effects of NPs. Herein, the elemental mass size distribution (EMSD), which measures particle size, mass, and composition, is proposed for the direct size characterization, mass quantification, and composition identification of trace NPs in complex matrixes. A one-step method for the rapid measurement of EMSDs in 8 min was developed through the online coupling of size-exclusion chromatography (SEC) with Size inductively coupled plasma mass spectrometry (ICP-MS). The use of a mobile phase with a relatively high ionic strength (a mixture of 2% FL-70 and 2 mM Na2S2O3) ensured the complete elution of different-sized NPs from the column and, therefore, a size-independent response. After application of a correction for instrumental broadening by a method developed in this study, the size distribution of NPs by EMSD determination agreed closely with that obtained from transmission electron microscopy (TEM) analysis. Compared with TEM, EMSD allows a more rapid determination with a higher mass sensitivity (1 pg for gold and silver NPs) and comparable size discrimination (0.27 nrn). The proposed EMSD-based method was capable of identifying trace Ag2S NPs and core-shell nanocomposite Au@Ag, as well as quantitatively tracking the dissolution and size transformation of silver nanoparticles in serum and environmental waters.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/39303]
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
推荐引用方式 GB/T 7714	Liu, Jing-fu,Zhou, Xiao-xia,Jiang, Gui-bin. Elemental Mass Size Distribution for Characterization, Quantification and Identification of Trace Nanoparticles in Serum and Environmental Waters[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2017,51(7):3892-3901.
APA	Liu, Jing-fu,Zhou, Xiao-xia,&Jiang, Gui-bin.(2017).Elemental Mass Size Distribution for Characterization, Quantification and Identification of Trace Nanoparticles in Serum and Environmental Waters.ENVIRONMENTAL SCIENCE & TECHNOLOGY,51(7),3892-3901.
MLA	Liu, Jing-fu,et al."Elemental Mass Size Distribution for Characterization, Quantification and Identification of Trace Nanoparticles in Serum and Environmental Waters".ENVIRONMENTAL SCIENCE & TECHNOLOGY 51.7(2017):3892-3901.