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题名: Axial temperature gradient and mobile phase gradient in microcolumn high-performance liquid chromatography
作者: Tian, Hongzhe;  Xu, Jing;  Guan, Yafeng
关键词: axial temperature gradient ;  high temperature liquid chromatography ;  micro-HPLC ;  polycyclic aromatic hydrocarbons
刊名: TALANTA
发表日期: 2007-04-30
DOI: 10.1016/j.talanta.2006.12.018
卷: 72, 期:2, 页:813-818
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
研究领域[WOS]: Chemistry
英文摘要: The effect of axial temperature gradient (ATG) along a microcolumn on the separation performance at both isocratic and gradient elution mode was investigated. A thermostat system was designed to form an ATG along the packed column. Polycyclic aromatic hydrocarbons (PAHs) were separated on a 0.53 mm x 150 mm i.d. 5 mu m C-18 microcolumn, with water and acetonitrile as mobile phase. The separation results obtained at mobile phase gradient (MPG) and ATG in microcolumn HPLC were compared with the results performed at ambient conditions. Extrapolated curves of peak width at half height (w(h)) versus Ink showed that w(h) is narrower at the same retention time when ATG was applied in addition to MPG. The column efficiency was enhanced 20-30% and the resolution was slightly reduced because of reduction of selectivity at elevated temperature at ATG condition. The RSD of retention time in ATG mode was less than 2.5%. (c) 2006 Elsevier B.V. All rights reserved.
关键词[WOS]: PACKED CAPILLARY COLUMNS ;  HPLC ;  OPTIMIZATION ;  SEPARATION ;  RETENTION
语种: 英语
WOS记录号: WOS:000246321200070
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140589
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, Dept Instrumentat & Analyt Sci, Dalian 116023, Peoples R China

Recommended Citation:
Tian, Hongzhe,Xu, Jing,Guan, Yafeng. Axial temperature gradient and mobile phase gradient in microcolumn high-performance liquid chromatography[J]. TALANTA,2007,72(2):813-818.
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