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Coupling of a large-size capillary column with an electrospray mass spectrometer. A reliable and sensitive sheath flow capillary electrophoresis-mass spectrometry interface



Coupling of a large-size capillary column with an electrospray mass spectrometer. A reliable and sensitive sheath flow capillary electrophoresis-mass spectrometry interface



Journal of Chromatography. A 1013(1-2): 9-18



The concept of interfacing a large-size column for capillary electrophoresis (CE) to electrospray ionization mass spectrometry (ESI-MS) for robust and automatic CE-MS operation is reported. Both standard ionspray interface and microionspray interface have been modified to operate in a sheath flow pattern to overcome the common stability problem in CE-MS coupling. To make the interface sensitive, a step-down stainless steel tube with smaller inner diameter and tapered tip was incorporated onto a larger tube embracing the CE column via cold soldering. The devices were evaluated for quantitative analysis of nucleotides at femtomole level and stable analytical performance in peptide profiling.

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Accession: 011908071

Download citation: RISBibTeXText

PMID: 14604103

DOI: 10.1016/s0021-9673(03)00778-7


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