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学科主题: 物理化学
题名: Array capillary in-tube solid-phase microextraction: A rapid preparation technique for water samples
作者: Yan, Xiaohui1, 2;  Wu, Dapeng1;  Peng, Hong1, 2;  Ding, Kun1;  Duan, Chunfeng1;  Guan, Yafeng1
通讯作者: 关亚风
关键词: Array capillary in tube solid-phase microextraction (ACIT-SPME) ;  Rapid preparation technique ;  Water analysis ;  Thermal desorption ;  Polycyclic aromatic hydrocarbons (PAHs)
刊名: JOURNAL OF CHROMATOGRAPHY A
发表日期: 2012-06-29
DOI: 10.1016/j.chroma.2012.05.015
卷: 1244, 页:69-76
收录类别: SCI
文章类型: Article
部门归属: 1
项目归属: 105
产权排名: 1,1
类目[WOS]: Biochemical Research Methods ;  Chemistry, Analytical
研究领域[WOS]: Biochemistry & Molecular Biology ;  Chemistry
英文摘要: A rapid sample preparation technique, namely array capillary in-tube solid-phase microextraction (ACIT-SPME) for direct extraction of organic pollutants from water samples, was developed and evaluated. The ACIT-SPME cartridge consisted of a bundle of glass capillary tubes of 0.5 mm I.D. x 30 mm contained inside a quartz liner of 4 min I.D. The high ratio of cross-section area of channel-to-wall allowed water sample flow through the cartridge just under gravity. Both the internal/external surfaces of the array capillary tubing were coated with extraction phase of 2-5 mu m in thickness, which provided large extraction surface area up to 30 cm(2) for a cartridge containing 19 glass capillaries. The large surface area and thin extraction phase improved greatly both the mass transfer process of extraction and the therm desorption process, leading to fast extraction and fast desorption. The extracted analytes were thermally desorbed in a homemade thermal desorption unit (TDU), which was coupled to a gas chromatograph equipped with a flame ionization detector for analysis. By using polydimethylsiloxane (PDMS) as the extraction phase and polycyclic aromatic hydrocarbons (PAHs) as the model analytes, the performance of the ACIT-SPME cartridge was systematically investigated. The extraction time was 2 min for 350 mL of water sample, and detection limits were between 0.8 and 1.7 ng/L with deviation of 2.8-9.7% RSD. Relative recoveries of analytes for real water samples were between 65.0% and 116%. The extraction time can even be further shortened to 10 s for 250 mL sample by applying vacuum at the outlet of the cartridge, with detection limits of 2.2-5.3 ng/L and deviation of 4.0-12% RSD. (C) 2012 Elsevier B.V. All rights reserved.
关键词[WOS]: POLYCYCLIC AROMATIC-HYDROCARBONS ;  BAR SORPTIVE EXTRACTION ;  CHROMATOGRAPHY-MASS SPECTROMETRY ;  PERFORMANCE LIQUID-CHROMATOGRAPHY ;  SINGLE-DROP MICROEXTRACTION ;  GAS-CHROMATOGRAPHY ;  ORGANIC-COMPOUNDS ;  GEL TECHNOLOGY ;  FIBERS ;  PESTICIDES
语种: 英语
WOS记录号: WOS:000305361400009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/118135
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 CAS, Dept Instrumentat & Analyt Chem, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Dalian Inst Chem Phys, Beijing 100039, Peoples R China

Recommended Citation:
Yan, Xiaohui,Wu, Dapeng,Peng, Hong,et al. Array capillary in-tube solid-phase microextraction: A rapid preparation technique for water samples[J]. JOURNAL OF CHROMATOGRAPHY A,2012,1244:69-76.
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