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题名: A new poly (phthalazine ether sulfone ketone)-coated fiber for solid-phase microextraction to determine nitroaromatic explosives in aqueous samples
作者: Guan, Wenna;  Xu, Feng;  Liu, Wenmin;  Zhao, Jinghong;  Guan, Yafeng
关键词: solid-phase microextraction ;  explosives ;  poly(phthalazine ether sulfone ketone) ;  immersion precipetition ;  gas chromatography
刊名: JOURNAL OF CHROMATOGRAPHY A
发表日期: 2007-04-13
DOI: 10.1016/j.chroma.2007.01.132
卷: 1147, 期:1, 页:59-65
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: A novel polar solid-phase microextraction (SPME) fiber coated with poly(phthalazine ether sulfone ketone) (PPESK) was prepared by immersion precipitation technique. The microstructure of the coating exhibits a sponge-like sublayer supporting a dense cracking shaped top layer (about 1 pm in thickness). This coating shows long lifetime (up to 100 times) and is stable at desorption temperature up to 290 degrees C due to the rigid aromatic rings in chemical structure. We evaluated the extraction-desorption properties of the PPESK fiber for nitroaromatic explosives in aqueous samples. The parameters affecting the extraction were optimized, including extraction temperature and time, salt addition, desorption temperature and time. Limits of detection (LOD), precisions and linear dynamic range for the analysis of explosives by SPME-GC/TSD or ECD were evaluated. Limits of detection of the new fiber was three orders of magnitude lower than those with carbowax/divinylbenzene (CW/DVB), and the relative standard deviation (RSD) of single fiber and fiber-to-fiber were less than 9.3 and 10.4%, respectively. The results demonstrated that the PPESK coating exhibited high extraction efficiency for nitroaromatic compounds due to the pi-pi interaction, dipole-dipole interactions and interactions by polar functional groups. The method was applied to the analysis of nitroaromatic explosives in real aqueous samples including seawater and groundwater samples, with relative recoveries better than 90.7%. (c) 2007 Elsevier B.V. All rights reserved.
关键词[WOS]: GEL TECHNOLOGY ;  GAS-CHROMATOGRAPHY ;  MASS-SPECTROMETRY ;  STATIONARY PHASES ;  MICRO EXTRACTION ;  WATER ;  MEMBRANES
语种: 英语
WOS记录号: WOS:000245603600010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140685
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, Dalian 116023, Peoples R China

Recommended Citation:
Guan, Wenna,Xu, Feng,Liu, Wenmin,et al. A new poly (phthalazine ether sulfone ketone)-coated fiber for solid-phase microextraction to determine nitroaromatic explosives in aqueous samples[J]. JOURNAL OF CHROMATOGRAPHY A,2007,1147(1):59-65.
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