splitless injection peak area reproducibility

Discussions about GC and other "gas phase" separation techniques.

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I am working on EPA 525.2 water analysis method using splitless mode ( Agilent 7890A GC). The problem I have is the reproducibility of the internal standards and surrogates. The peak shapes are all good but the peak areas could vary a lot. Can somebody working on the same method give me some guide? THanks
Details? The more you don't tell us, the less we can help.
Can you give column and inlet conditions?

Do you see the variation when injecting the same vial multiple times or when injecting from different vials?
The past is there to guide us into the future, not to dwell in.
3 posts Page 1 of 1

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