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题名: Salt-assisted dispersive liquid-liquid microextraction coupled with programmed temperature vaporization gas chromatography-mass Spectrometry for the determination of haloacetonitriles in drinking water
作者: Ma, Huilian1;  Li, Yun1;  Zhang, Haijun1;  Shah, Syed Mazhar1;  Chen, Jiping1
关键词: Disinfection by-products ;  Haloacetonitrile ;  Salt-assisted ;  Dispersive liquid-liquid microextraction ;  Programmed temperature vaporizer ;  Gas chromatography-mass spectrometry
刊名: JOURNAL OF CHROMATOGRAPHY A
发表日期: 2014-09-05
DOI: 10.1016/j.chroma.2014.06.021
卷: 1358, 页:14-19
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine ;  Physical Sciences
类目[WOS]: Biochemical Research Methods ;  Chemistry, Analytical
研究领域[WOS]: Biochemistry & Molecular Biology ;  Chemistry
英文摘要: We report here a new analytical method for the simultaneous determination of seven haloacetonitriles (HANs) in drinking water by coupling salt-assisted dispersive liquid-liquid microextraction (SADLLME) with programmed temperature vaporizer-gas chromatography-mass spectrometry (PTV-GC-MS). The newly developed method involves the dispersion of the extractant in aqueous sample by addition of a few grams of salt and no dispersion liquid was required as compared to the traditional DLLME methods. The extractant (CH2Cl2, 50 mu L) and the salt (Na2SO4, 2.4g) were successively added to water (8 mL) in a conical centrifuge tube that was shaken for 1 mm and centrifuged (3500 rpm, 3 min). The aliquot of sedimented phase (4 mu L) was then directly injected into the PTV-GC-MS system. The limits of detection and quantification for the HANs were 0.4-13.2 ng L-1 and 1.2-43.9 ng L-1, respectively. The calibration curves showed good linearity (r(2) >= 0.9904) over 3 orders of magnitude. The repeatability of the method was investigated by evaluating the intra- and inter-day precisions. The relative standard deviations (RSDs) obtained were lower than 10.2% and 7.8% at low and high concentration levels. The relative recoveries ranged from 79.3% to 105.1%. The developed methodology was applied for the analysis of seven HANs in several drinking water samples in coastal and inland cities of China. It was demonstrated to be a simple, sensible, reproducible and environment friendly method for the determination of trace HANs in drinking water samples. (C) 2014 Elsevier B.V. All rights reserved.
关键词[WOS]: DISINFECTION BY-PRODUCTS ;  EXTRACTION ;  DBPS ;  HALONITROMETHANES ;  TRIHALOMETHANES ;  CHLORINATION ;  GENOTOXICITY
语种: 英语
WOS记录号: WOS:000340979200002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145585
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Key Lab Separat Sci Analyt Chem, Dalian 116023, Peoples R China

Recommended Citation:
Ma, Huilian,Li, Yun,Zhang, Haijun,et al. Salt-assisted dispersive liquid-liquid microextraction coupled with programmed temperature vaporization gas chromatography-mass Spectrometry for the determination of haloacetonitriles in drinking water[J]. JOURNAL OF CHROMATOGRAPHY A,2014,1358:14-19.
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