, Volume 8, Issue 11, pp 605–616 | Cite as

Extraneous peaks in gas chromatography; Their source and elimination

  • J. E. Purcell
  • H. D. Downs
  • L. S. Ettre


Extraneous (ghost) peaks can be traced back to the flow controller, the carrier gas, the injector system and the septum. Each component is discussed and the reasons for the appearance of such peaks are pointed out. Possibilities for partial or complete elimination of these extraneous peaks are discussed in detail including a trap after the flow controller, an improved injector system, and various devices to shield the septum from the inside injector volume.


Chromatography Analytical Chemistry Organic Chemistry Ghost Injector Volume 
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Copyright information

© Friedr. Vieweg & Sohn, Verlagsgesellschaft mbH 1975

Authors and Affiliations

  • J. E. Purcell
    • 1
  • H. D. Downs
    • 1
  • L. S. Ettre
    • 1
  1. 1.The Perkin-Elmer CorporationNorwalkU.S.A.

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