Journal
ELECTROPHORESIS
Volume 25, Issue 13, Pages 2084-2089Publisher
WILEY
DOI: 10.1002/elps.200305907
Keywords
capillary zone electrophoresis; low-flow interface; mass spectrometry; Micellar electrokinetic chromatography
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A simple and durable sheath liquid interface for capillary zone electrophoresis-electrospray ionization-mass spectrometry (CZE-ESI-MS) has been developed. This interface utilized a beveled tip emitter and was found to be more sensitive than the conventional sheath liquid interface. The use of a beveled tip reduces the optimal flow rate and therefore decreases sample dilution. The interface utilized a 380 gm inner diameter and 400 gm outer diameter beveled tapered tip. Because of the large inner diameter and outer diameter of the tip, the interface is robust and can be easily implemented. The performance of this interface for CZE-ESI-MS and micelle electrokinetic capillary electrophoresis-electrospray-mass spectrometry, as demonstrated by the analysis of synthetic drugs and triazine mixtures, was significantly better than results obtained using a conventional sheath liquid interface.
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