Coupling Microdialysis Sampling to Microchip Electrophoresis in a Reversibly Sealed Device

被引：0
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作者：
Mecker, Laura C. [1 ]
Martin, R. Scott [1 ]
机构：
[1] Saint Louis University, St. Louis, MO, United States
来源：
JALA - Journal of the Association for Laboratory Automation | 2007年 / 12卷 / 05期
关键词：
In this article, we describe the fabrication and characterization of a reversibly sealed microchip device that is used to couple microdialysis sampling to microchip electrophoresis. The ability to interface microdialysis sampling and microchip electrophoresis in a device that is amenable to reversible sealing is advantageous from a repeated use standpoint. Commercially, available tubing coming from the microdialysis probe is directly inserted into the chip and flow from the probe is interfaced to the electrophoresis portion of the device through integrated pneumatic valves. Fluorescence detection was used to characterize the poly(dimethylsiloxane)-based device in terms of injection reproducibility. It was found that the entire system (microdialysis probe and microchip device) has a concentration response lag time of 170 s. Microdialysis sampling followed by an electrophoretic separation of amino acids derivatized with naphthalene-2,3-dicarboxaldehyde/cyanide was also demonstrated. © 2007 The Association for Laboratory Automation;
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页码：296 / 302
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