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题名: Double-cross hydrostatic pressure sample injection for chip CE: Variable sample plug volume and minimum number of electrodes
作者: Luo, Yong;  Wu, Dapeng;  Zeng, Shaojiang;  Gai, Hongwei;  Long, Zhicheng;  Shen, Zheng;  Dai, Zhongpeng;  Qin, Jianhua;  Lin, Bingcheng
通讯作者: 秦建华 ;  林炳承
刊名: ANALYTICAL CHEMISTRY
发表日期: 2006-09-01
DOI: 10.1021/ac0605142
卷: 78, 期:17, 页:6074-6080
收录类别: SCI
文章类型: Article
部门归属: 18
项目归属: 1807
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
研究领域[WOS]: Chemistry
英文摘要: A novel sample injection method for chip CE was presented. This injection method uses hydrostatic pressure, generated by emptying the sample waste reservoir, for sample loading and electrokinetic force for dispensing. The injection was performed on a double-cross microchip. One cross, created by the sample and separation channels, is used for formation of a sample plug. Another cross, formed by the sample and controlling channels, is used for plug control. By varying the electric field in the controlling channel, the sample plug volume can be linearly adjusted. Hydrostatic pressure takes advantage of its ease of generation on a microfluidic chip, without any electrode or external pressure pump, thus allowing a sample injection with a minimum number of electrodes. The potential of this injection method was demonstrated by a four-separation-channel chip CE system. In this system, parallel sample separation can be achieved with only two electrodes, which is otherwise impossible with conventional injection methods. Hydrostatic pressure maintains the sample composition during the sample loading, allowing the injection to be free of injection bias.
关键词[WOS]: CAPILLARY ELECTROPHORESIS ;  MICROCHIP ELECTROPHORESIS ;  MICROFLUIDIC CHIPS ;  HYDRODYNAMIC INJECTION ;  FLOW ;  PERFORMANCE ;  SYSTEM ;  DEVICES ;  SEPARATIONS
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000240158000024
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/97221
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, Lab Microfluid Syst Biol, Dalian, Liaoning Prov, Peoples R China

Recommended Citation:
Luo, Yong,Wu, Dapeng,Zeng, Shaojiang,et al. Double-cross hydrostatic pressure sample injection for chip CE: Variable sample plug volume and minimum number of electrodes[J]. ANALYTICAL CHEMISTRY,2006,78(17):6074-6080.
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