Study of an electroosmotic pump for liquid delivery and its application in capillary column liquid chromatography

	Study of an electroosmotic pump for liquid delivery and its application in capillary column liquid chromatography
	Chen, LX; Ma, JP; Guan, YF
刊名	journal of chromatography a
	2004-03-05
卷号	1028 期号:2 页码:219-226
关键词	electroosmotic pump pumps instrumentation
产权排序	1;1
英文摘要	a packed-bed electroosmotic pump (eop) was constructed and evaluated. the eop consisted of three capillary columns packed in parallel, a gas-releasing device, pt electrodes and a high-voltage power supply. the eop could generate output pressure above 5.0 mpa and constant flow rate in the range of nl/min to a few mul/min for pure water, pure methanol, 2 mm potassium dihydrogenphosphate buffer, the buffer-methanol mixture and the pure water-methanol mixture at applied potentials less than 20 w the composition of solvent before/after pumping was quantitatively determined by using a gas chromatograph equipped with both flame ionization detector and thermal conductivity detector. it was found that there were no apparent changes in composition and relative concentrations after pumping process for a methanol-ethanol-acetonitrile mixture and a methanol-water mixture. theoretical aspect of the eop was discussed in detail. an capillary hplc system consisting of the eop, an injection valve, a 15 cm x 320 mum i.d., 5 mum spherigel c(18) stainless steel analytical column, and an on-column uv detector was connected to evaluate the performance of the eop. a comparative study was also carried out with a mechanical capillary hplc pump on the same system. the results demonstrated that the reproducibility of flow rate and the pulsation-free flow property of the eop are superior to that of mechanical pump in capillary hplc application. (c) 2004 elsevier b.v. all rights reserved.
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
关键词[WOS]	magnetohydrodynamic micropump ; flow ; fabrication ; systems ; hplc
收录类别	SCI
原文出处	true
语种	英语
WOS记录号	WOS:000188738600005
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/81699]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	Chinese Acad Sci, Dalian Inst Chem Phys, Dept Analyt Chem & Microinstrumentat, Dalian 116012, Peoples R China
推荐引用方式 GB/T 7714	Chen, LX,Ma, JP,Guan, YF. Study of an electroosmotic pump for liquid delivery and its application in capillary column liquid chromatography[J]. journal of chromatography a,2004,1028(2):219-226.
APA	Chen, LX,Ma, JP,&Guan, YF.(2004).Study of an electroosmotic pump for liquid delivery and its application in capillary column liquid chromatography.journal of chromatography a,1028(2),219-226.
MLA	Chen, LX,et al."Study of an electroosmotic pump for liquid delivery and its application in capillary column liquid chromatography".journal of chromatography a 1028.2(2004):219-226.