A direct sample introduction device for mass spectrometry studies and gas chromatography mass spectrometry analyses

Aviv Amirav, Shai Dagan

Research output: Contribution to journalArticlepeer-review

Abstract

A novel direct sample introduction (DSI) device is described, based on sample introduction in a disposable mini-vial (test tube) inside the existing gas chromatography (GC) injector. This DSI device effectively transforms a conventional GC injector, followed by a short capillary column, into a very cost-effective alternative to the standard direct insertion probe and enables a continuous sample flux at the mass spectrometer ion source for mass spectrometry (MS) and MS-MS studies. This same device also enables direct introduction of dirty samples for GC and GC-MS analysis. The dirty sample introduction is based on the thermal extraction of semi-volatile sample compounds inside the GC injector, while the non-volatile residue is retained in the sample vial that is disposed of after the analysis. The major capabilities of this new DSI device are demonstrated and its various features are discussed.

Original languageEnglish
Pages (from-to)105-111
Number of pages7
JournalEuropean Journal of Mass Spectrometry
Volume3
Issue number2
DOIs
StatePublished - 1997

Keywords

  • Direct sample introduction
  • Extract-free supersonic molecular beams
  • Probe

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