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Salt-assisted dispersive liquid-liquid microextraction coupled with programmed temperature vaporization gas chromatography-mass Spectrometry for the determination of haloacetonitriles in drinking water
Ma, Huilian; Li, Yun; Zhang, Haijun; Shah, Syed Mazhar; Chen, Jiping
KeywordDisinfection By-products Haloacetonitrile Salt-assisted Dispersive Liquid-liquid Microextraction Programmed Temperature Vaporizer Gas Chromatography-mass Spectrometry
Source PublicationJOURNAL OF CHROMATOGRAPHY A
2014-09-05
DOI10.1016/j.chroma.2014.06.021
Volume1358Pages:14-19
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
WOS SubjectBiochemical Research Methods ; Chemistry, Analytical
WOS Research AreaBiochemistry & Molecular Biology ; Chemistry
WOS KeywordDISINFECTION BY-PRODUCTS ; EXTRACTION ; DBPS ; HALONITROMETHANES ; TRIHALOMETHANES ; CHLORINATION ; GENOTOXICITY
AbstractWe 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.
Language英语
WOS IDWOS:000340979200002
Citation statistics
Cited Times:27[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/145585
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, Key Lab Separat Sci Analyt Chem, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
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.
APA Ma, Huilian,Li, Yun,Zhang, Haijun,Shah, Syed Mazhar,&Chen, Jiping.(2014).Salt-assisted dispersive liquid-liquid microextraction coupled with programmed temperature vaporization gas chromatography-mass Spectrometry for the determination of haloacetonitriles in drinking water.JOURNAL OF CHROMATOGRAPHY A,1358,14-19.
MLA Ma, Huilian,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".JOURNAL OF CHROMATOGRAPHY A 1358(2014):14-19.
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