Comparison between different sheathless electrospray emitter configurations regarding the performance of nanoscale liquid chromatography-time-of-flight mass spectrometry analysis

Ardeshir Amirkhani, Magnus Wetterhall, Stefan Nilsson, Rolf Danielsson, Jonas Bergquist*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Four different sheathless electrospray ionization (ESI) configurations were investigated for a nano liquid chromatography (LC) system. The studied configurations were: a column with an integrated emitter, with the ESI potential applied before or after the column, and a column with separate emitter, with the ESI voltage applied at a union before the emitter or at the emitter tip. The results indicates that the efficiency of the LC system is rather independent of the configuration when using 95 μm i.d. columns, acetic mobile phase and standard peptides as a sample. Introduction of post column dead volume seems not to be a critical issue at least with flow rates down to 600 nl/min.

Original languageEnglish
Pages (from-to)257-266
Number of pages10
JournalJournal of Chromatography A
Volume1033
Issue number2
Early online date2 Mar 2004
DOIs
Publication statusPublished - 16 Apr 2004
Externally publishedYes

Keywords

  • Nanotechnology
  • Peptide Mapping
  • Serum Albumin, Bovine/chemistry
  • Spectrometry, Mass, Electrospray Ionization/methods
  • Trypsin/chemistry

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