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- Posts: 5
- Joined: Tue Nov 13, 2018 4:35 pm
The equipment used includes: Aquatek 100, Lumin Concentrator (using VOCARB K Trap), 7890B GC, and 5977A MSD.
Discussions about chromatography data systems, LIMS, controllers, computer issues and related topics.
I agree with Steve. Its probably an active sites problem. It happens with metals analysis also. You can run a concentrated potassium signal and then rinse it down to nearly nothing. Then aspirate a high sodium standard and suddenly you have potassium showing up again.Steve Reimer wrote:
There have been several threads on this forum about increasing response overall for internal standards with increasing concentration of target analytes.
It is a common problem for me when I analyze nasty samples (water with visible creosote or a beads of PCE appear in some of my projects). The cure is to clean out the entire path from the vial to the GC inlet and the MS source.
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