Detection of trace levels of lead in aqueous liquids using extractive electrospray ionization tandem mass spectrometry

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

	Detection of trace levels of lead in aqueous liquids using extractive electrospray ionization tandem mass spectrometry
	Liu, Chunxiao ; Zhang, Xinglei ; Xiao, Saijin ; Jia, Bin ; Cui, Shasha ; Shi, Jianbo ; Xu, Ning ; Xie, Xi ; Gu, Haiwei ; Chen, Huanwen
刊名	Chemistry
	2012
卷号	98 期号:1 页码:79-85
关键词	Extractive electrospray ionization Ambient mass spectrometry Tandem mass spectrometry Lead Beverage
ISSN号	0039-9140
中文摘要	A sensitive approach, based on semi-quantitative measurement of the characteristic fragments in multistage extractive electrospray ionization mass spectrometry (EESI-MSn), was developed for fast detection of trace levels of lead in aqueous liquids including mineral water, lake water, tap water, energy drinks, soft drinks, beer, orange juice, and tea. A disodium ethylene-diamine-tetraacetic acid (EDTA) aqueous solution was electrosprayed to produce negatively charged primary ions which then intersected the neutral sample plume to generate anions of EDTA-Pb(II) complexes. The charged EDTA-Pb(II) complexes were characterized with multistage collision induced dissociation (CID) experiments. The limit of detection (LOD) using EESI-MS3 was estimated to be at the level of 10(-13) g/mL for directly detecting lead in many of these samples. The linear dynamic range was higher than 2 orders of magnitude. A single sample analysis could be completed within 2 min with reasonable semi-quantitative performance, e.g., relative standard deviations (RSDs) for deionized water were 4.6-7.6% during 5 experimental runs (each of them had 10 repeated measurements). Coca-cola and Huiyuan orange juice, representative beverage samples with complex matrices, generated recovery rates of 91.5% and 129%, respectively. Our experimental data demonstrated that EESI-MS is a useful tool for the fast detection of lead in various solutions, and EESI-MS showed promises for fast screening of lead-contaminated aqueous liquid samples. (C) 2012 Elsevier B.V. All rights reserved,
WOS记录号	WOS:000309327600012
公开日期	2014-11-27
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/8039]
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, Chunxiao,Zhang, Xinglei,Xiao, Saijin,et al. Detection of trace levels of lead in aqueous liquids using extractive electrospray ionization tandem mass spectrometry[J]. Chemistry,2012,98(1):79-85.
APA	Liu, Chunxiao.,Zhang, Xinglei.,Xiao, Saijin.,Jia, Bin.,Cui, Shasha.,...&Chen, Huanwen.(2012).Detection of trace levels of lead in aqueous liquids using extractive electrospray ionization tandem mass spectrometry.Chemistry,98(1),79-85.
MLA	Liu, Chunxiao,et al."Detection of trace levels of lead in aqueous liquids using extractive electrospray ionization tandem mass spectrometry".Chemistry 98.1(2012):79-85.