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题名: Acetone-activated polyimide electrospun nanofiber membrane for thin-film microextraction and thermal desorption-gas chromatography-mass spectrometric analysis of phenols in environmental water
作者: Li, Shenghong1, 2;  Wu, Dapeng1;  Yan, Xiaohui1;  Guan, Yafeng1
关键词: Polyimide ;  Electrospun ;  Nanofiber ;  Acetone ;  Thin film microextraction (TFME) ;  Phenols
刊名: JOURNAL OF CHROMATOGRAPHY A
发表日期: 2015-09-11
DOI: 10.1016/j.chroma.2015.07.050
卷: 1411, 页:1-8
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: In this work, a polyimide nanofiber membrane was electrospun and applied as sorbent for thin film microextraction (TFME). After TFME of phenols in water samples, direct thermal desorption of the sorbent at 300 degrees C followed by gas chromatography-mass spectrometric (TD-GC-MS) analysis was carried out. The extraction efficiency of TFME was enhanced by 6-12 times for phenols after activation with acetone. The positive effect of acetone activation was correlated to the increased hydrophilicity of the membrane. Extraction parameters, including mass of nanofiber membrane, pH value, NaCl concentration and extraction time, were optimized. Under optimal conditions, the LODs and LOQs for analysis of phenols in spiked purified water were 0.0006-0.008 and 0.002-0.025 mu g L-1, respectively. The linearity range was more than two orders of magnitude (R > 0.99). The RSDs of intra-batch and inter-batch were 4.3-7.4% and 2.7-10.6% (n = 3). Finally the method was applied to real samples, including tap water, sea water, and waste water. These results indicate that the polyimide nanofiber membrane is a promising candidate as TFME sorbent for determination of polar analytes in water samples coupled with TD-GC-MS. (C) 2015 Elsevier B.V. All rights reserved.
关键词[WOS]: SOLID-PHASE MICROEXTRACTION ;  BAR SORPTIVE EXTRACTION ;  POLYCYCLIC AROMATIC-HYDROCARBONS ;  PERSONAL CARE PRODUCTS ;  AQUEOUS SAMPLES ;  COATED FIBER ;  CHLOROPHENOLS ;  COATINGS ;  SORBENT ;  LIQUID
语种: 英语
WOS记录号: WOS:000361075600001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146515
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, Key Lab Separat Sci Analyt Chem, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China

Recommended Citation:
Li, Shenghong,Wu, Dapeng,Yan, Xiaohui,et al. Acetone-activated polyimide electrospun nanofiber membrane for thin-film microextraction and thermal desorption-gas chromatography-mass spectrometric analysis of phenols in environmental water[J]. JOURNAL OF CHROMATOGRAPHY A,2015,1411:1-8.
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