Rapid Determination of Uranium in Water Samples by Adsorptive Cathodic   Stripping Voltammetry Using a Tin-Bismuth Alloy Electrode

doi:10.1016/j.electacta.2015.06.087

CORC > 北京大学 > 环境科学与工程学院

	Rapid Determination of Uranium in Water Samples by Adsorptive Cathodic Stripping Voltammetry Using a Tin-Bismuth Alloy Electrode
	Zhang, Li ; Wang, Cong-Zhi ; Tang, Hong-Bin ; Wang, Lin ; Liu, Yang-Sheng ; Zhao, Yu-Liang ; Chai, Zhi-Fang ; Shi, Wei-Qun
刊名	ELECTROCHIMICA ACTA
	2015
关键词	Tin-bismuth alloy electrode Adsorptive cathodic stripping voltammetry Uranium Water sample FILM ELECTRODE TRACE URANIUM ELECTROCHEMICAL DETERMINATION SELECTIVE DETERMINATION CUPFERRON COMPLEX BULK ELECTRODE SPECTROMETRY SEAWATER MERCURY DENSITY
DOI	10.1016/j.electacta.2015.06.087
英文摘要	In this work, the tin-bismuth alloy electrode (SnBiE) was used for U(VI) concentration determination for the first time. Compared to the conventional solid electrode (glassy carbon electrode and bismuth bulk electrode), the SnBiE possesses a higher hydrogen overpotential, which indicates that the tin-bismuth alloy can considerably extend the application of potentially available electrode detection systems. Combining with electrochemical behavior analysis and spectrometric measurements as well as theoretical calculation methods, the geometric structures of uranium-cupferron (N-nitrosophenylhydroxylamine) complexes have been revealed and a more detailed electrode mechanism has been proposed. The electroanalysis results show that the optimal sensitivity could be obtained by using diphenylguanidine as the auxiliary reagent. The calibration plot for U(VI) quantification was linear from 0.5 nM to 30 nM with a correlation coefficient of 0.999. In the meanwhile, a detection limit of 0.24 nM was obtained in connection with an accumulation time of 30 s, which is comparable with that of mercury analogues. The practical applications of SnBiE have been tentatively performed for the determination of UO22+ in real water samples and the results were well consistent with those by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). A very simple, convenient and cheap approach was established for the determination of UO22+ in natural water samples containing surfactants without the otherwise necessity of sample pretreatment, which drastically reduce the analysis time. (C) 2015 Elsevier Ltd. All rights reserved.; Natural Science Foundation of China [91426302, 91326202, 11275219, 21261140335]; Chinese Academy of Sciences [XDA030104]; SCI(E); ARTICLE; shiwq@ihep.ac.cn; 925-932; 174
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/417132]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Zhang, Li,Wang, Cong-Zhi,Tang, Hong-Bin,et al. Rapid Determination of Uranium in Water Samples by Adsorptive Cathodic Stripping Voltammetry Using a Tin-Bismuth Alloy Electrode[J]. ELECTROCHIMICA ACTA,2015.
APA	Zhang, Li.,Wang, Cong-Zhi.,Tang, Hong-Bin.,Wang, Lin.,Liu, Yang-Sheng.,...&Shi, Wei-Qun.(2015).Rapid Determination of Uranium in Water Samples by Adsorptive Cathodic Stripping Voltammetry Using a Tin-Bismuth Alloy Electrode.ELECTROCHIMICA ACTA.
MLA	Zhang, Li,et al."Rapid Determination of Uranium in Water Samples by Adsorptive Cathodic Stripping Voltammetry Using a Tin-Bismuth Alloy Electrode".ELECTROCHIMICA ACTA (2015).