Use of KCl to increase HS-GC Detection Limits

Chromatography Forum: GC Archives: Use of KCl to increase HS-GC Detection Limits
Top of pagePrevious messageNext messageBottom of pageLink to this message  By Anonymous on Tuesday, November 2, 1999 - 01:56 pm:

Question concerning the use of KCl to increase detection of volatiles in aqueous solution by headspace GC. Has anyone experienced problems using this technique with Perkin-Elmer HS40 units? In particular there appears to be some noticeable KCL deposits on the septa of the HS vial. Is it possible some of the aqueous solution is being sprayed onto the septa during the depressurization step? If so could this be caused by use of unacceptable pressure (too high)to pressurize the vial? What is a good pressure to use for pressurizing the vials?


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